RESOURCES
=========
-The Linux version of the 9p server is now maintained under the npfs project
-on sourceforge (http://sourceforge.net/projects/npfs).
+Our current recommendation is to use Inferno (http://www.vitanuova.com/inferno)
+as the 9p server. You can start a 9p server under Inferno by issuing the
+following command:
+ ; styxlisten -A tcp!*!564 export '#U*'
+
+The -A specifies an unauthenticated export. The 564 is the port # (you may
+have to choose a higher port number if running as a normal user). The '#U*'
+specifies exporting the root of the Linux name space. You may specify a
+subset of the namespace by extending the path: '#U*'/tmp would just export
+/tmp. For more information, see the Inferno manual pages covering styxlisten
+and export.
+
+A Linux version of the 9p server is now maintained under the npfs project
+on sourceforge (http://sourceforge.net/projects/npfs). There is also a
+more stable single-threaded version of the server (named spfs) available from
+the same CVS repository.
There are user and developer mailing lists available through the v9fs project
on sourceforge (http://sourceforge.net/projects/v9fs).
The 2.6 kernel support is working on PPC and x86.
-PLEASE USE THE SOURCEFORGE BUG-TRACKER TO REPORT PROBLEMS.
+PLEASE USE THE KERNEL BUGZILLA TO REPORT PROBLEMS. (http://bugzilla.kernel.org)
S: Maintained
DSCC4 DRIVER
-P: François Romieu
-M: romieu@cogenit.fr
-M: romieu@ensta.fr
+P: Francois Romieu
+M: romieu@fr.zoreil.com
+L: netdev@vger.kernel.org
S: Maintained
DVB SUBSYSTEM AND DRIVERS
KERNEL NFSD
P: Neil Brown
-M: neilb@cse.unsw.edu.au
+M: neilb@suse.de
L: nfs@lists.sourceforge.net
W: http://nfs.sourceforge.net/
-W: http://www.cse.unsw.edu.au/~neilb/patches/linux-devel/
-S: Maintained
+S: Supported
KERNEL VIRTUAL MACHINE (KVM)
P: Avi Kivity
P: Ingo Molnar
M: mingo@redhat.com
P: Neil Brown
-M: neilb@cse.unsw.edu.au
+M: neilb@suse.de
L: linux-raid@vger.kernel.org
-S: Maintained
+S: Supported
SOFTWARE SUSPEND:
P: Pavel Machek
L: i2c@lm-sensors.org
S: Maintained
+VIA VELOCITY NETWORK DRIVER
+P: Francois Romieu
+M: romieu@fr.zoreil.com
+L: netdev@vger.kernel.org
+S: Maintained
+
UCLINUX (AND M68KNOMMU)
P: Greg Ungerer
M: gerg@uclinux.org
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 20
-EXTRAVERSION =-rc5
+EXTRAVERSION =-rc6
NAME = Homicidal Dwarf Hamster
# *DOCUMENTATION*
pushl $(__USER_CS)
CFI_ADJUST_CFA_OFFSET 4
/*CFI_REL_OFFSET cs, 0*/
+#ifndef CONFIG_COMPAT_VDSO
/*
* Push current_thread_info()->sysenter_return to the stack.
* A tiny bit of offset fixup is necessary - 4*4 means the 4 words
* pushed above; +8 corresponds to copy_thread's esp0 setting.
*/
pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
+#else
+ pushl $SYSENTER_RETURN
+#endif
CFI_ADJUST_CFA_OFFSET 4
CFI_REL_OFFSET eip, 0
#ifdef CONFIG_COMPAT_VDSO
__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_READONLY);
printk("Compat vDSO mapped to %08lx.\n", __fix_to_virt(FIX_VDSO));
-#else
- /*
- * In the non-compat case the ELF coredumping code needs the fixmap:
- */
- __set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_KERNEL_RO);
#endif
if (!boot_cpu_has(X86_FEATURE_SEP)) {
return 0;
}
+#ifndef CONFIG_COMPAT_VDSO
static struct page *syscall_nopage(struct vm_area_struct *vma,
unsigned long adr, int *type)
{
vma->vm_end = addr + PAGE_SIZE;
/* MAYWRITE to allow gdb to COW and set breakpoints */
vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+ /*
+ * Make sure the vDSO gets into every core dump.
+ * Dumping its contents makes post-mortem fully interpretable later
+ * without matching up the same kernel and hardware config to see
+ * what PC values meant.
+ */
+ vma->vm_flags |= VM_ALWAYSDUMP;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 7];
vma->vm_ops = &syscall_vm_ops;
{
return 0;
}
+#endif
select PPC_970_NAP
select PPC_NATIVE
select PPC_RTAS
+ select ATA_NONSTANDARD if ATA
default n
help
This option enables support for the Maple 970FX Evaluation Board.
* pages though
*/
vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC;
+ /*
+ * Make sure the vDSO gets into every core dump.
+ * Dumping its contents makes post-mortem fully interpretable later
+ * without matching up the same kernel and hardware config to see
+ * what PC values meant.
+ */
+ vma->vm_flags |= VM_ALWAYSDUMP;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
vma->vm_ops = &vdso_vmops;
choice
prompt "Host memory split"
default HOST_VMSPLIT_3G
- ---help---
- This is needed when the host kernel on which you run has a non-default
- (like 2G/2G) memory split, instead of the customary 3G/1G. If you did
- not recompile your own kernel but use the default distro's one, you can
- safely accept the "Default split" option.
+ help
+ This is needed when the host kernel on which you run has a non-default
+ (like 2G/2G) memory split, instead of the customary 3G/1G. If you did
+ not recompile your own kernel but use the default distro's one, you can
+ safely accept the "Default split" option.
- It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
- CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
- patchset by Con Kolivas, or other ones) - option names match closely the
- host CONFIG_VM_SPLIT_* ones.
+ It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
+ CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
+ patchset by Con Kolivas, or other ones) - option names match closely the
+ host CONFIG_VM_SPLIT_* ones.
- A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
- tolerate even more "normal" host kernels, but an higher setting will be
- stricter.
+ A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
+ tolerate even more "normal" host kernels, but an higher setting will be
+ stricter.
- So, if you do not know what to do here, say 'Default split'.
+ So, if you do not know what to do here, say 'Default split'.
config HOST_VMSPLIT_3G
bool "Default split (3G/1G user/kernel host split)"
config STUB_CODE
hex
- default 0xbfffe000 if !HOST_2G_2G
- default 0x7fffe000 if HOST_2G_2G
+ default 0xbfffe000 if !HOST_VMSPLIT_2G
+ default 0x7fffe000 if HOST_VMSPLIT_2G
config STUB_DATA
hex
- default 0xbffff000 if !HOST_2G_2G
- default 0x7ffff000 if HOST_2G_2G
+ default 0xbffff000 if !HOST_VMSPLIT_2G
+ default 0x7ffff000 if HOST_VMSPLIT_2G
config STUB_START
hex
#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-/*
- * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
- * extra segments containing the vsyscall DSO contents. Dumping its
- * contents makes post-mortem fully interpretable later without matching up
- * the same kernel and hardware config to see what PC values meant.
- * Dumping its extra ELF program headers includes all the other information
- * a debugger needs to easily find how the vsyscall DSO was being used.
- */
-#define ELF_CORE_EXTRA_PHDRS (find_vma(current->mm, VSYSCALL32_BASE) ? \
- (VSYSCALL32_EHDR->e_phnum) : 0)
-#define ELF_CORE_WRITE_EXTRA_PHDRS \
-do { \
- if (find_vma(current->mm, VSYSCALL32_BASE)) { \
- const struct elf32_phdr *const vsyscall_phdrs = \
- (const struct elf32_phdr *) (VSYSCALL32_BASE \
- + VSYSCALL32_EHDR->e_phoff);\
- int i; \
- Elf32_Off ofs = 0; \
- for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) { \
- struct elf32_phdr phdr = vsyscall_phdrs[i]; \
- if (phdr.p_type == PT_LOAD) { \
- BUG_ON(ofs != 0); \
- ofs = phdr.p_offset = offset; \
- phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz); \
- phdr.p_filesz = phdr.p_memsz; \
- offset += phdr.p_filesz; \
- } \
- else \
- phdr.p_offset += ofs; \
- phdr.p_paddr = 0; /* match other core phdrs */ \
- DUMP_WRITE(&phdr, sizeof(phdr)); \
- } \
- } \
-} while (0)
-#define ELF_CORE_WRITE_EXTRA_DATA \
-do { \
- if (find_vma(current->mm, VSYSCALL32_BASE)) { \
- const struct elf32_phdr *const vsyscall_phdrs = \
- (const struct elf32_phdr *) (VSYSCALL32_BASE \
- + VSYSCALL32_EHDR->e_phoff); \
- int i; \
- for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) { \
- if (vsyscall_phdrs[i].p_type == PT_LOAD) \
- DUMP_WRITE((void *) (u64) vsyscall_phdrs[i].p_vaddr,\
- PAGE_ALIGN(vsyscall_phdrs[i].p_memsz)); \
- } \
- } \
-} while (0)
-
struct elf_siginfo
{
int si_signo; /* signal number */
vma->vm_end = VSYSCALL32_END;
/* MAYWRITE to allow gdb to COW and set breakpoints */
vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+ /*
+ * Make sure the vDSO gets into every core dump.
+ * Dumping its contents makes post-mortem fully interpretable later
+ * without matching up the same kernel and hardware config to see
+ * what PC values meant.
+ */
+ vma->vm_flags |= VM_ALWAYSDUMP;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 7];
vma->vm_ops = &syscall32_vm_ops;
return 0;
}
+const char *arch_vma_name(struct vm_area_struct *vma)
+{
+ if (vma->vm_start == VSYSCALL32_BASE &&
+ vma->vm_mm && vma->vm_mm->task_size == IA32_PAGE_OFFSET)
+ return "[vdso]";
+ return NULL;
+}
+
static int __init init_syscall32(void)
{
syscall32_page = (void *)get_zeroed_page(GFP_KERNEL);
if (result)
return result;
- result = acpi_processor_get_platform_limit(pr);
- if (result)
- return result;
-
return 0;
}
if ATA
+config ATA_NONSTANDARD
+ bool
+ default n
+
config SATA_AHCI
tristate "AHCI SATA support"
depends on PCI
AHCI_CMD_CLR_BUSY = (1 << 10),
RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
+ RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
board_ahci = 0,
dma_addr_t cmd_tbl_dma;
void *rx_fis;
dma_addr_t rx_fis_dma;
+ /* for NCQ spurious interrupt analysis */
+ int ncq_saw_spurious_sdb_cnt;
+ unsigned int ncq_saw_d2h:1;
+ unsigned int ncq_saw_dmas:1;
};
static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg);
/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(ap->device, &tf);
- tf.command = 0xff;
+ tf.command = 0x80;
ata_tf_to_fis(&tf, d2h_fis, 0);
rc = sata_std_hardreset(ap, class);
void __iomem *mmio = ap->host->mmio_base;
void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
struct ata_eh_info *ehi = &ap->eh_info;
+ struct ahci_port_priv *pp = ap->private_data;
u32 status, qc_active;
- int rc;
+ int rc, known_irq = 0;
status = readl(port_mmio + PORT_IRQ_STAT);
writel(status, port_mmio + PORT_IRQ_STAT);
/* hmmm... a spurious interupt */
- /* some devices send D2H reg with I bit set during NCQ command phase */
- if (ap->sactive && (status & PORT_IRQ_D2H_REG_FIS))
+ /* if !NCQ, ignore. No modern ATA device has broken HSM
+ * implementation for non-NCQ commands.
+ */
+ if (!ap->sactive)
return;
- /* ignore interim PIO setup fis interrupts */
- if (ata_tag_valid(ap->active_tag) && (status & PORT_IRQ_PIOS_FIS))
- return;
+ if (status & PORT_IRQ_D2H_REG_FIS) {
+ if (!pp->ncq_saw_d2h)
+ ata_port_printk(ap, KERN_INFO,
+ "D2H reg with I during NCQ, "
+ "this message won't be printed again\n");
+ pp->ncq_saw_d2h = 1;
+ known_irq = 1;
+ }
+
+ if (status & PORT_IRQ_DMAS_FIS) {
+ if (!pp->ncq_saw_dmas)
+ ata_port_printk(ap, KERN_INFO,
+ "DMAS FIS during NCQ, "
+ "this message won't be printed again\n");
+ pp->ncq_saw_dmas = 1;
+ known_irq = 1;
+ }
+
+ if (status & PORT_IRQ_SDB_FIS &&
+ pp->ncq_saw_spurious_sdb_cnt < 10) {
+ /* SDB FIS containing spurious completions might be
+ * dangerous, we need to know more about them. Print
+ * more of it.
+ */
+ const u32 *f = pp->rx_fis + RX_FIS_SDB;
+
+ ata_port_printk(ap, KERN_INFO, "Spurious SDB FIS during NCQ "
+ "issue=0x%x SAct=0x%x FIS=%08x:%08x%s\n",
+ readl(port_mmio + PORT_CMD_ISSUE),
+ readl(port_mmio + PORT_SCR_ACT),
+ le32_to_cpu(f[0]), le32_to_cpu(f[1]),
+ pp->ncq_saw_spurious_sdb_cnt < 10 ?
+ "" : ", shutting up");
+
+ pp->ncq_saw_spurious_sdb_cnt++;
+ known_irq = 1;
+ }
- if (ata_ratelimit())
+ if (!known_irq)
ata_port_printk(ap, KERN_INFO, "spurious interrupt "
- "(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
+ "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
status, ap->active_tag, ap->sactive);
}
/**
* generic_set_mode - mode setting
* @ap: interface to set up
+ * @unused: returned device on error
*
* Use a non standard set_mode function. We don't want to be tuned.
* The BIOS configured everything. Our job is not to fiddle. We
* and respect them.
*/
-static void generic_set_mode(struct ata_port *ap)
+static int generic_set_mode(struct ata_port *ap, struct ata_device **unused)
{
int dma_enabled = 0;
int i;
for (i = 0; i < ATA_MAX_DEVICES; i++) {
struct ata_device *dev = &ap->device[i];
- if (ata_dev_enabled(dev)) {
+ if (ata_dev_ready(dev)) {
/* We don't really care */
dev->pio_mode = XFER_PIO_0;
dev->dma_mode = XFER_MW_DMA_0;
}
}
}
+ return 0;
}
static struct scsi_host_template generic_sht = {
int i, rc = 0, used_dma = 0, found = 0;
/* has private set_mode? */
- if (ap->ops->set_mode) {
- /* FIXME: make ->set_mode handle no device case and
- * return error code and failing device on failure.
- */
- for (i = 0; i < ATA_MAX_DEVICES; i++) {
- if (ata_dev_ready(&ap->device[i])) {
- ap->ops->set_mode(ap);
- break;
- }
- }
- return 0;
- }
+ if (ap->ops->set_mode)
+ return ap->ops->set_mode(ap, r_failed_dev);
/* step 1: calculate xfer_mask */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
*/
void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)
{
- ata_bmdma_stop(qc);
+ if (qc->ap->ioaddr.bmdma_addr)
+ ata_bmdma_stop(qc);
}
#ifdef CONFIG_PCI
pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS;
bmdma = pci_resource_start(pdev, 4);
if (bmdma) {
- if (inb(bmdma + 2) & 0x80)
+ if ((!(port[p]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
+ (inb(bmdma + 2) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
probe_ent->port[p].bmdma_addr = bmdma;
}
bmdma = pci_resource_start(pdev, 4);
if (bmdma) {
bmdma += 8;
- if(inb(bmdma + 2) & 0x80)
+ if ((!(port[p]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
+ (inb(bmdma + 2) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
probe_ent->port[p].bmdma_addr = bmdma;
}
probe_ent->irq_flags = IRQF_SHARED;
if (port_mask & ATA_PORT_PRIMARY) {
- probe_ent->irq = ATA_PRIMARY_IRQ;
+ probe_ent->irq = ATA_PRIMARY_IRQ(pdev);
probe_ent->port[0].cmd_addr = ATA_PRIMARY_CMD;
probe_ent->port[0].altstatus_addr =
probe_ent->port[0].ctl_addr = ATA_PRIMARY_CTL;
if (bmdma) {
probe_ent->port[0].bmdma_addr = bmdma;
- if (inb(bmdma + 2) & 0x80)
+ if ((!(port[0]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
+ (inb(bmdma + 2) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
}
ata_std_ports(&probe_ent->port[0]);
if (port_mask & ATA_PORT_SECONDARY) {
if (probe_ent->irq)
- probe_ent->irq2 = ATA_SECONDARY_IRQ;
+ probe_ent->irq2 = ATA_SECONDARY_IRQ(pdev);
else
- probe_ent->irq = ATA_SECONDARY_IRQ;
+ probe_ent->irq = ATA_SECONDARY_IRQ(pdev);
probe_ent->port[1].cmd_addr = ATA_SECONDARY_CMD;
probe_ent->port[1].altstatus_addr =
probe_ent->port[1].ctl_addr = ATA_SECONDARY_CTL;
if (bmdma) {
probe_ent->port[1].bmdma_addr = bmdma + 8;
- if (inb(bmdma + 10) & 0x80)
+ if ((!(port[1]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
+ (inb(bmdma + 10) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
}
ata_std_ports(&probe_ent->port[1]);
static void cmd64x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
static const u8 udma_data[] = {
- 0x31, 0x21, 0x11, 0x25, 0x15, 0x05
+ 0x30, 0x20, 0x10, 0x20, 0x10, 0x00
};
static const u8 mwdma_data[] = {
0x30, 0x20, 0x10
pci_read_config_byte(pdev, pciD, ®D);
pci_read_config_byte(pdev, pciU, ®U);
- regD &= ~(0x20 << shift);
- regU &= ~(0x35 << shift);
+ /* DMA bits off */
+ regD &= ~(0x20 << adev->devno);
+ /* DMA control bits */
+ regU &= ~(0x30 << shift);
+ /* DMA timing bits */
+ regU &= ~(0x05 << adev->devno);
- if (adev->dma_mode >= XFER_UDMA_0)
+ if (adev->dma_mode >= XFER_UDMA_0) {
+ /* Merge thge timing value */
regU |= udma_data[adev->dma_mode - XFER_UDMA_0] << shift;
- else
+ /* Merge the control bits */
+ regU |= 1 << adev->devno; /* UDMA on */
+ if (adev->dma_mode > 2) /* 15nS timing */
+ regU |= 4 << adev->devno;
+ } else
regD |= mwdma_data[adev->dma_mode - XFER_MW_DMA_0] << shift;
regD |= 0x20 << adev->devno;
struct ata_port *ap = qc->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 dma_intr;
- int dma_reg = ap->port_no ? ARTTIM23_INTR_CH1 : CFR_INTR_CH0;
- int dma_mask = ap->port_no ? ARTTIM2 : CFR;
+ int dma_mask = ap->port_no ? ARTTIM23_INTR_CH1 : CFR_INTR_CH0;
+ int dma_reg = ap->port_no ? ARTTIM2 : CFR;
ata_bmdma_stop(qc);
#include <linux/libata.h>
#define DRV_NAME "pata_hpt3x2n"
-#define DRV_VERSION "0.3"
+#define DRV_VERSION "0.3.2"
enum {
HPT_PCI_FAST = (1 << 31),
return 0;
}
-static int hpt3x2n_use_dpll(struct ata_port *ap, int reading)
+static int hpt3x2n_use_dpll(struct ata_port *ap, int writing)
{
long flags = (long)ap->host->private_data;
/* See if we should use the DPLL */
- if (reading == 0)
+ if (writing)
return USE_DPLL; /* Needed for write */
if (flags & PCI66)
return USE_DPLL; /* Needed at 66Mhz */
/**
* it821x_smart_set_mode - mode setting
* @ap: interface to set up
+ * @unused: device that failed (error only)
*
* Use a non standard set_mode function. We don't want to be tuned.
* The BIOS configured everything. Our job is not to fiddle. We
* and respect them.
*/
-static void it821x_smart_set_mode(struct ata_port *ap)
+static int it821x_smart_set_mode(struct ata_port *ap, struct ata_device **unused)
{
int dma_enabled = 0;
int i;
}
}
}
+ return 0;
}
/**
#include <scsi/scsi_host.h>
#define DRV_NAME "pata_ixp4xx_cf"
-#define DRV_VERSION "0.1.1"
+#define DRV_VERSION "0.1.1ac1"
-static void ixp4xx_set_mode(struct ata_port *ap)
+static int ixp4xx_set_mode(struct ata_port *ap, struct ata_device *adev)
{
int i;
dev->flags |= ATA_DFLAG_PIO;
}
}
+ return 0;
}
static void ixp4xx_phy_reset(struct ata_port *ap)
/**
* legacy_set_mode - mode setting
* @ap: IDE interface
+ * @unused: Device that failed when error is returned
*
* Use a non standard set_mode function. We don't want to be tuned.
*
* expand on this as per hdparm in the base kernel.
*/
-static void legacy_set_mode(struct ata_port *ap)
+static int legacy_set_mode(struct ata_port *ap, struct ata_device **unused)
{
int i;
dev->flags |= ATA_DFLAG_PIO;
}
}
+ return 0;
}
static struct scsi_host_template legacy_sht = {
/**
* rz1000_set_mode - mode setting function
* @ap: ATA interface
+ * @unused: returned device on set_mode failure
*
* Use a non standard set_mode function. We don't want to be tuned. We
* would prefer to be BIOS generic but for the fact our hardware is
* whacked out.
*/
-static void rz1000_set_mode(struct ata_port *ap)
+static int rz1000_set_mode(struct ata_port *ap, struct ata_device **unused)
{
int i;
for (i = 0; i < ATA_MAX_DEVICES; i++) {
struct ata_device *dev = &ap->device[i];
- if (ata_dev_enabled(dev)) {
+ if (ata_dev_ready(dev)) {
/* We don't really care */
dev->pio_mode = XFER_PIO_0;
dev->xfer_mode = XFER_PIO_0;
dev->flags |= ATA_DFLAG_PIO;
}
}
+ return 0;
}
static struct ata_port_info uli_port_info = {
.sht = &uli_sht,
- .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+ .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+ ATA_FLAG_IGN_SIMPLEX,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = 0x7f, /* udma0-6 */
.port_ops = &uli_ops,
static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+static void svia_noop_freeze(struct ata_port *ap);
static void vt6420_error_handler(struct ata_port *ap);
static const struct pci_device_id svia_pci_tbl[] = {
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_pio_data_xfer,
- .freeze = ata_bmdma_freeze,
+ .freeze = svia_noop_freeze,
.thaw = ata_bmdma_thaw,
.error_handler = vt6420_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
}
+static void svia_noop_freeze(struct ata_port *ap)
+{
+ /* Some VIA controllers choke if ATA_NIEN is manipulated in
+ * certain way. Leave it alone and just clear pending IRQ.
+ */
+ ata_chk_status(ap);
+ ata_bmdma_irq_clear(ap);
+}
+
/**
* vt6420_prereset - prereset for vt6420
* @ap: target ATA port
struct kobject kobj;
};
-#define get_efivar_entry(n) list_entry(n, struct efivar_entry, list)
-
struct efivar_attribute {
struct attribute attr;
ssize_t (*show) (struct efivar_entry *entry, char *buf);
static void efivar_release(struct kobject *kobj)
{
struct efivar_entry *var = container_of(kobj, struct efivar_entry, kobj);
- spin_lock(&efivars_lock);
- list_del(&var->list);
- spin_unlock(&efivars_lock);
kfree(var);
}
efivar_create(struct subsystem *sub, const char *buf, size_t count)
{
struct efi_variable *new_var = (struct efi_variable *)buf;
- struct efivar_entry *search_efivar = NULL;
+ struct efivar_entry *search_efivar, *n;
unsigned long strsize1, strsize2;
- struct list_head *pos, *n;
efi_status_t status = EFI_NOT_FOUND;
int found = 0;
/*
* Does this variable already exist?
*/
- list_for_each_safe(pos, n, &efivar_list) {
- search_efivar = get_efivar_entry(pos);
+ list_for_each_entry_safe(search_efivar, n, &efivar_list, list) {
strsize1 = utf8_strsize(search_efivar->var.VariableName, 1024);
strsize2 = utf8_strsize(new_var->VariableName, 1024);
if (strsize1 == strsize2 &&
efivar_delete(struct subsystem *sub, const char *buf, size_t count)
{
struct efi_variable *del_var = (struct efi_variable *)buf;
- struct efivar_entry *search_efivar = NULL;
+ struct efivar_entry *search_efivar, *n;
unsigned long strsize1, strsize2;
- struct list_head *pos, *n;
efi_status_t status = EFI_NOT_FOUND;
int found = 0;
/*
* Does this variable already exist?
*/
- list_for_each_safe(pos, n, &efivar_list) {
- search_efivar = get_efivar_entry(pos);
+ list_for_each_entry_safe(search_efivar, n, &efivar_list, list) {
strsize1 = utf8_strsize(search_efivar->var.VariableName, 1024);
strsize2 = utf8_strsize(del_var->VariableName, 1024);
if (strsize1 == strsize2 &&
spin_unlock(&efivars_lock);
return -EIO;
}
+ list_del(&search_efivar->list);
/* We need to release this lock before unregistering. */
spin_unlock(&efivars_lock);
-
efivar_unregister(search_efivar);
/* It's dead Jim.... */
static void __exit
efivars_exit(void)
{
- struct list_head *pos, *n;
+ struct efivar_entry *entry, *n;
- list_for_each_safe(pos, n, &efivar_list)
- efivar_unregister(get_efivar_entry(pos));
+ list_for_each_entry_safe(entry, n, &efivar_list, list) {
+ spin_lock(&efivars_lock);
+ list_del(&entry->list);
+ spin_unlock(&efivars_lock);
+ efivar_unregister(entry);
+ }
subsystem_unregister(&vars_subsys);
firmware_unregister(&efi_subsys);
{
unsigned long flags;
unsigned i;
- static struct cardstate *ret = NULL;
+ struct cardstate *ret = NULL;
spin_lock_irqsave(&drv->lock, flags);
for (i = 0; i < drv->minors; ++i) {
if (!(drv->flags[i] & VALID_MINOR)) {
- drv->flags[i] = VALID_MINOR;
- ret = drv->cs + i;
- }
- if (ret)
+ if (try_module_get(drv->owner)) {
+ drv->flags[i] = VALID_MINOR;
+ ret = drv->cs + i;
+ }
break;
+ }
}
spin_unlock_irqrestore(&drv->lock, flags);
return ret;
unsigned long flags;
struct gigaset_driver *drv = cs->driver;
spin_lock_irqsave(&drv->lock, flags);
+ if (drv->flags[cs->minor_index] & VALID_MINOR)
+ module_put(drv->owner);
drv->flags[cs->minor_index] = 0;
spin_unlock_irqrestore(&drv->lock, flags);
}
} else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN);
else {
- warn("could not allocate skb\n");
+ warn("could not allocate skb");
bcs->inputstate |= INS_skip_frame;
}
int i;
gig_dbg(DEBUG_INIT, "allocating cs");
- cs = alloc_cs(drv);
- if (!cs)
- goto error;
+ if (!(cs = alloc_cs(drv))) {
+ err("maximum number of devices exceeded");
+ return NULL;
+ }
+ mutex_init(&cs->mutex);
+ mutex_lock(&cs->mutex);
+
gig_dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1);
cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL);
- if (!cs->bcs)
+ if (!cs->bcs) {
+ err("out of memory");
goto error;
+ }
gig_dbg(DEBUG_INIT, "allocating inbuf");
cs->inbuf = kmalloc(sizeof(struct inbuf_t), GFP_KERNEL);
- if (!cs->inbuf)
+ if (!cs->inbuf) {
+ err("out of memory");
goto error;
+ }
cs->cs_init = 0;
cs->channels = channels;
spin_lock_init(&cs->ev_lock);
cs->ev_tail = 0;
cs->ev_head = 0;
- mutex_init(&cs->mutex);
- mutex_lock(&cs->mutex);
tasklet_init(&cs->event_tasklet, &gigaset_handle_event,
(unsigned long) cs);
for (i = 0; i < channels; ++i) {
gig_dbg(DEBUG_INIT, "setting up bcs[%d].read", i);
- if (!gigaset_initbcs(cs->bcs + i, cs, i))
+ if (!gigaset_initbcs(cs->bcs + i, cs, i)) {
+ err("could not allocate channel %d data", i);
goto error;
+ }
}
++cs->cs_init;
make_valid(cs, VALID_ID);
++cs->cs_init;
gig_dbg(DEBUG_INIT, "setting up hw");
- if (!cs->ops->initcshw(cs))
+ if (!cs->ops->initcshw(cs)) {
+ err("could not allocate device specific data");
goto error;
+ }
++cs->cs_init;
mutex_unlock(&cs->mutex);
return cs;
-error: if (cs)
- mutex_unlock(&cs->mutex);
+error:
+ mutex_unlock(&cs->mutex);
gig_dbg(DEBUG_INIT, "failed");
gigaset_freecs(cs);
return NULL;
spin_unlock_irqrestore(&driver_lock, flags);
gigaset_if_freedriver(drv);
- module_put(drv->owner);
kfree(drv->cs);
kfree(drv->flags);
if (!drv)
return NULL;
- if (!try_module_get(owner))
- goto out1;
-
- drv->cs = NULL;
drv->have_tty = 0;
drv->minor = minor;
drv->minors = minors;
drv->cs = kmalloc(minors * sizeof *drv->cs, GFP_KERNEL);
if (!drv->cs)
- goto out2;
+ goto error;
drv->flags = kmalloc(minors * sizeof *drv->flags, GFP_KERNEL);
if (!drv->flags)
- goto out3;
+ goto error;
for (i = 0; i < minors; ++i) {
drv->flags[i] = 0;
return drv;
-out3:
+error:
kfree(drv->cs);
-out2:
- module_put(owner);
-out1:
kfree(drv);
return NULL;
}
u64 pdptrs[4]; /* pae */
u64 shadow_efer;
u64 apic_base;
+ u64 ia32_misc_enable_msr;
int nmsrs;
struct vmx_msr_entry *guest_msrs;
struct vmx_msr_entry *host_msrs;
case MSR_IA32_APICBASE:
data = vcpu->apic_base;
break;
+ case MSR_IA32_MISC_ENABLE:
+ data = vcpu->ia32_misc_enable_msr;
+ break;
#ifdef CONFIG_X86_64
case MSR_EFER:
data = vcpu->shadow_efer;
case MSR_IA32_APICBASE:
vcpu->apic_base = data;
break;
+ case MSR_IA32_MISC_ENABLE:
+ vcpu->ia32_misc_enable_msr = data;
+ break;
default:
printk(KERN_ERR "kvm: unhandled wrmsr: 0x%x\n", msr);
return 1;
static unsigned num_msrs_to_save;
+static u32 emulated_msrs[] = {
+ MSR_IA32_MISC_ENABLE,
+};
+
static __init void kvm_init_msr_list(void)
{
u32 dummy[2];
if (copy_from_user(&msr_list, user_msr_list, sizeof msr_list))
goto out;
n = msr_list.nmsrs;
- msr_list.nmsrs = num_msrs_to_save;
+ msr_list.nmsrs = num_msrs_to_save + ARRAY_SIZE(emulated_msrs);
if (copy_to_user(user_msr_list, &msr_list, sizeof msr_list))
goto out;
r = -E2BIG;
if (copy_to_user(user_msr_list->indices, &msrs_to_save,
num_msrs_to_save * sizeof(u32)))
goto out;
+ if (copy_to_user(user_msr_list->indices
+ + num_msrs_to_save * sizeof(u32),
+ &emulated_msrs,
+ ARRAY_SIZE(emulated_msrs) * sizeof(u32)))
+ goto out;
r = 0;
break;
}
#define PFERR_PRESENT_MASK (1U << 0)
#define PFERR_WRITE_MASK (1U << 1)
#define PFERR_USER_MASK (1U << 2)
+#define PFERR_FETCH_MASK (1U << 4)
#define PT64_ROOT_LEVEL 4
#define PT32_ROOT_LEVEL 2
return 1;
}
+static int is_nx(struct kvm_vcpu *vcpu)
+{
+ return vcpu->shadow_efer & EFER_NX;
+}
+
static int is_present_pte(unsigned long pte)
{
return pte & PT_PRESENT_MASK;
return 0;
}
-static int may_access(u64 pte, int write, int user)
-{
-
- if (user && !(pte & PT_USER_MASK))
- return 0;
- if (write && !(pte & PT_WRITABLE_MASK))
- return 0;
- return 1;
-}
-
static void paging_free(struct kvm_vcpu *vcpu)
{
nonpaging_free(vcpu);
pt_element_t *ptep;
pt_element_t inherited_ar;
gfn_t gfn;
+ u32 error_code;
};
/*
* Fetch a guest pte for a guest virtual address
*/
-static void FNAME(walk_addr)(struct guest_walker *walker,
- struct kvm_vcpu *vcpu, gva_t addr)
+static int FNAME(walk_addr)(struct guest_walker *walker,
+ struct kvm_vcpu *vcpu, gva_t addr,
+ int write_fault, int user_fault, int fetch_fault)
{
hpa_t hpa;
struct kvm_memory_slot *slot;
walker->ptep = &vcpu->pdptrs[(addr >> 30) & 3];
root = *walker->ptep;
if (!(root & PT_PRESENT_MASK))
- return;
+ goto not_present;
--walker->level;
}
#endif
ASSERT(((unsigned long)walker->table & PAGE_MASK) ==
((unsigned long)ptep & PAGE_MASK));
- if (is_present_pte(*ptep) && !(*ptep & PT_ACCESSED_MASK))
- *ptep |= PT_ACCESSED_MASK;
-
if (!is_present_pte(*ptep))
- break;
+ goto not_present;
+
+ if (write_fault && !is_writeble_pte(*ptep))
+ if (user_fault || is_write_protection(vcpu))
+ goto access_error;
+
+ if (user_fault && !(*ptep & PT_USER_MASK))
+ goto access_error;
+
+#if PTTYPE == 64
+ if (fetch_fault && is_nx(vcpu) && (*ptep & PT64_NX_MASK))
+ goto access_error;
+#endif
+
+ if (!(*ptep & PT_ACCESSED_MASK))
+ *ptep |= PT_ACCESSED_MASK; /* avoid rmw */
if (walker->level == PT_PAGE_TABLE_LEVEL) {
walker->gfn = (*ptep & PT_BASE_ADDR_MASK)
}
walker->ptep = ptep;
pgprintk("%s: pte %llx\n", __FUNCTION__, (u64)*ptep);
+ return 1;
+
+not_present:
+ walker->error_code = 0;
+ goto err;
+
+access_error:
+ walker->error_code = PFERR_PRESENT_MASK;
+
+err:
+ if (write_fault)
+ walker->error_code |= PFERR_WRITE_MASK;
+ if (user_fault)
+ walker->error_code |= PFERR_USER_MASK;
+ if (fetch_fault)
+ walker->error_code |= PFERR_FETCH_MASK;
+ return 0;
}
static void FNAME(release_walker)(struct guest_walker *walker)
u32 error_code)
{
int write_fault = error_code & PFERR_WRITE_MASK;
- int pte_present = error_code & PFERR_PRESENT_MASK;
int user_fault = error_code & PFERR_USER_MASK;
+ int fetch_fault = error_code & PFERR_FETCH_MASK;
struct guest_walker walker;
u64 *shadow_pte;
int fixed;
/*
* Look up the shadow pte for the faulting address.
*/
- FNAME(walk_addr)(&walker, vcpu, addr);
- shadow_pte = FNAME(fetch)(vcpu, addr, &walker);
+ r = FNAME(walk_addr)(&walker, vcpu, addr, write_fault, user_fault,
+ fetch_fault);
/*
* The page is not mapped by the guest. Let the guest handle it.
*/
- if (!shadow_pte) {
- pgprintk("%s: not mapped\n", __FUNCTION__);
- inject_page_fault(vcpu, addr, error_code);
+ if (!r) {
+ pgprintk("%s: guest page fault\n", __FUNCTION__);
+ inject_page_fault(vcpu, addr, walker.error_code);
FNAME(release_walker)(&walker);
return 0;
}
+ shadow_pte = FNAME(fetch)(vcpu, addr, &walker);
pgprintk("%s: shadow pte %p %llx\n", __FUNCTION__,
shadow_pte, *shadow_pte);
* mmio: emulate if accessible, otherwise its a guest fault.
*/
if (is_io_pte(*shadow_pte)) {
- if (may_access(*shadow_pte, write_fault, user_fault))
- return 1;
- pgprintk("%s: io work, no access\n", __FUNCTION__);
- inject_page_fault(vcpu, addr,
- error_code | PFERR_PRESENT_MASK);
- kvm_mmu_audit(vcpu, "post page fault (io)");
- return 0;
- }
-
- /*
- * pte not present, guest page fault.
- */
- if (pte_present && !fixed && !write_pt) {
- inject_page_fault(vcpu, addr, error_code);
- kvm_mmu_audit(vcpu, "post page fault (guest)");
- return 0;
+ return 1;
}
++kvm_stat.pf_fixed;
pt_element_t guest_pte;
gpa_t gpa;
- FNAME(walk_addr)(&walker, vcpu, vaddr);
+ FNAME(walk_addr)(&walker, vcpu, vaddr, 0, 0, 0);
guest_pte = *walker.ptep;
FNAME(release_walker)(&walker);
(1ULL << INTERCEPT_IOIO_PROT) |
(1ULL << INTERCEPT_MSR_PROT) |
(1ULL << INTERCEPT_TASK_SWITCH) |
+ (1ULL << INTERCEPT_SHUTDOWN) |
(1ULL << INTERCEPT_VMRUN) |
(1ULL << INTERCEPT_VMMCALL) |
(1ULL << INTERCEPT_VMLOAD) |
static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
{
- dt->limit = vcpu->svm->vmcb->save.ldtr.limit;
- dt->base = vcpu->svm->vmcb->save.ldtr.base;
+ dt->limit = vcpu->svm->vmcb->save.idtr.limit;
+ dt->base = vcpu->svm->vmcb->save.idtr.base;
}
static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
{
- vcpu->svm->vmcb->save.ldtr.limit = dt->limit;
- vcpu->svm->vmcb->save.ldtr.base = dt->base ;
+ vcpu->svm->vmcb->save.idtr.limit = dt->limit;
+ vcpu->svm->vmcb->save.idtr.base = dt->base ;
}
static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
return 0;
}
+static int shutdown_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+{
+ /*
+ * VMCB is undefined after a SHUTDOWN intercept
+ * so reinitialize it.
+ */
+ memset(vcpu->svm->vmcb, 0, PAGE_SIZE);
+ init_vmcb(vcpu->svm->vmcb);
+
+ kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
+ return 0;
+}
+
static int io_get_override(struct kvm_vcpu *vcpu,
struct vmcb_seg **seg,
int *addr_override)
[SVM_EXIT_IOIO] = io_interception,
[SVM_EXIT_MSR] = msr_interception,
[SVM_EXIT_TASK_SWITCH] = task_switch_interception,
+ [SVM_EXIT_SHUTDOWN] = shutdown_interception,
[SVM_EXIT_VMRUN] = invalid_op_interception,
[SVM_EXIT_VMMCALL] = invalid_op_interception,
[SVM_EXIT_VMLOAD] = invalid_op_interception,
int err = -EINVAL;
/* page 0 is the superblock, read it... */
- if (bitmap->file)
- bitmap->sb_page = read_page(bitmap->file, 0, bitmap, PAGE_SIZE);
- else {
+ if (bitmap->file) {
+ loff_t isize = i_size_read(bitmap->file->f_mapping->host);
+ int bytes = isize > PAGE_SIZE ? PAGE_SIZE : isize;
+
+ bitmap->sb_page = read_page(bitmap->file, 0, bitmap, bytes);
+ } else {
bitmap->sb_page = read_sb_page(bitmap->mddev, bitmap->offset, 0);
}
if (IS_ERR(bitmap->sb_page)) {
int count;
/* unmap the old page, we're done with it */
if (index == num_pages-1)
- count = bytes - index * PAGE_SIZE;
+ count = bytes + sizeof(bitmap_super_t)
+ - index * PAGE_SIZE;
else
count = PAGE_SIZE;
if (index == 0) {
if (size != get_capacity(md->disk))
memset(&md->geometry, 0, sizeof(md->geometry));
- __set_size(md, size);
+ if (md->suspended_bdev)
+ __set_size(md, size);
if (size == 0)
return 0;
if (!dm_suspended(md))
goto out;
+ /* without bdev, the device size cannot be changed */
+ if (!md->suspended_bdev)
+ if (get_capacity(md->disk) != dm_table_get_size(table))
+ goto out;
+
__unbind(md);
r = __bind(md, table);
/* This does not get reverted if there's an error later. */
dm_table_presuspend_targets(map);
- md->suspended_bdev = bdget_disk(md->disk, 0);
- if (!md->suspended_bdev) {
- DMWARN("bdget failed in dm_suspend");
- r = -ENOMEM;
- goto flush_and_out;
+ /* bdget() can stall if the pending I/Os are not flushed */
+ if (!noflush) {
+ md->suspended_bdev = bdget_disk(md->disk, 0);
+ if (!md->suspended_bdev) {
+ DMWARN("bdget failed in dm_suspend");
+ r = -ENOMEM;
+ goto flush_and_out;
+ }
}
/*
unlock_fs(md);
- bdput(md->suspended_bdev);
- md->suspended_bdev = NULL;
+ if (md->suspended_bdev) {
+ bdput(md->suspended_bdev);
+ md->suspended_bdev = NULL;
+ }
clear_bit(DMF_SUSPENDED, &md->flags);
* and 'events' is odd, we can roll back to the previous clean state */
if (nospares
&& (mddev->in_sync && mddev->recovery_cp == MaxSector)
- && (mddev->events & 1))
+ && (mddev->events & 1)
+ && mddev->events != 1)
mddev->events--;
else {
/* otherwise we have to go forward and ... */
char *ptr, *buf = NULL;
int err = -ENOMEM;
+ md_allow_write(mddev);
+
file = kmalloc(sizeof(*file), GFP_KERNEL);
if (!file)
goto out;
}
}
+/* md_allow_write(mddev)
+ * Calling this ensures that the array is marked 'active' so that writes
+ * may proceed without blocking. It is important to call this before
+ * attempting a GFP_KERNEL allocation while holding the mddev lock.
+ * Must be called with mddev_lock held.
+ */
+void md_allow_write(mddev_t *mddev)
+{
+ if (!mddev->pers)
+ return;
+ if (mddev->ro)
+ return;
+
+ spin_lock_irq(&mddev->write_lock);
+ if (mddev->in_sync) {
+ mddev->in_sync = 0;
+ set_bit(MD_CHANGE_CLEAN, &mddev->flags);
+ if (mddev->safemode_delay &&
+ mddev->safemode == 0)
+ mddev->safemode = 1;
+ spin_unlock_irq(&mddev->write_lock);
+ md_update_sb(mddev, 0);
+ } else
+ spin_unlock_irq(&mddev->write_lock);
+}
+EXPORT_SYMBOL_GPL(md_allow_write);
+
static DECLARE_WAIT_QUEUE_HEAD(resync_wait);
#define SYNC_MARKS 10
sbio->bi_sector = r1_bio->sector +
conf->mirrors[i].rdev->data_offset;
sbio->bi_bdev = conf->mirrors[i].rdev->bdev;
+ for (j = 0; j < vcnt ; j++)
+ memcpy(page_address(sbio->bi_io_vec[j].bv_page),
+ page_address(pbio->bi_io_vec[j].bv_page),
+ PAGE_SIZE);
+
}
}
}
return -EINVAL;
}
+ md_allow_write(mddev);
+
raid_disks = mddev->raid_disks + mddev->delta_disks;
if (raid_disks < conf->raid_disks) {
if (newsize <= conf->pool_size)
return 0; /* never bother to shrink */
+ md_allow_write(conf->mddev);
+
/* Step 1 */
sc = kmem_cache_create(conf->cache_name[1-conf->active_name],
sizeof(struct stripe_head)+(newsize-1)*sizeof(struct r5dev),
mdk_rdev_t *rdev;
if (!in_chunk_boundary(mddev, raid_bio)) {
- printk("chunk_aligned_read : non aligned\n");
+ PRINTK("chunk_aligned_read : non aligned\n");
return 0;
}
/*
else
break;
}
+ md_allow_write(mddev);
while (new > conf->max_nr_stripes) {
if (grow_one_stripe(conf))
conf->max_nr_stripes++;
.attrs = rtc_attrs,
};
-static int __devinit rtc_sysfs_add_device(struct class_device *class_dev,
+static int rtc_sysfs_add_device(struct class_device *class_dev,
struct class_interface *class_intf)
{
int err;
spi->bits_per_word - 16 : spi->bits_per_word)
| SSCR0_SSE
| (spi->bits_per_word > 16 ? SSCR0_EDSS : 0);
- chip->cr1 |= (((spi->mode & SPI_CPHA) != 0) << 4)
- | (((spi->mode & SPI_CPOL) != 0) << 3);
+ chip->cr1 &= ~(SSCR1_SPO | SSCR1_SPH);
+ chip->cr1 |= (((spi->mode & SPI_CPHA) != 0) ? SSCR1_SPH : 0)
+ | (((spi->mode & SPI_CPOL) != 0) ? SSCR1_SPO : 0);
/* NOTE: PXA25x_SSP _could_ use external clocking ... */
if (drv_data->ssp_type != PXA25x_SSP)
class_device_initialize(&master->cdev);
master->cdev.class = &spi_master_class;
- kobj_set_kset_s(&master->cdev, spi_master_class.subsys);
master->cdev.dev = get_device(dev);
spi_master_set_devdata(master, &master[1]);
*/
struct spi_master *spi_busnum_to_master(u16 bus_num)
{
- char name[9];
- struct kobject *bus;
-
- snprintf(name, sizeof name, "spi%u", bus_num);
- bus = kset_find_obj(&spi_master_class.subsys.kset, name);
- if (bus)
- return container_of(bus, struct spi_master, cdev.kobj);
- return NULL;
+ struct class_device *cdev;
+ struct spi_master *master = NULL;
+ struct spi_master *m;
+
+ down(&spi_master_class.sem);
+ list_for_each_entry(cdev, &spi_master_class.children, node) {
+ m = container_of(cdev, struct spi_master, cdev);
+ if (m->bus_num == bus_num) {
+ master = spi_master_get(m);
+ break;
+ }
+ }
+ up(&spi_master_class.sem);
+ return master;
}
EXPORT_SYMBOL_GPL(spi_busnum_to_master);
*
*/
-
-//#define DEBUG
-
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
int len;
int count;
+ int (*set_cs)(struct s3c2410_spi_info *spi,
+ int cs, int pol);
+
/* data buffers */
const unsigned char *tx;
unsigned char *rx;
return spi_master_get_devdata(sdev->master);
}
+static void s3c24xx_spi_gpiocs(struct s3c2410_spi_info *spi, int cs, int pol)
+{
+ s3c2410_gpio_setpin(spi->pin_cs, pol);
+}
+
static void s3c24xx_spi_chipsel(struct spi_device *spi, int value)
{
struct s3c24xx_spi *hw = to_hw(spi);
switch (value) {
case BITBANG_CS_INACTIVE:
- if (hw->pdata->set_cs)
- hw->pdata->set_cs(hw->pdata, value, cspol);
- else
- s3c2410_gpio_setpin(hw->pdata->pin_cs, cspol ^ 1);
+ hw->pdata->set_cs(hw->pdata, spi->chip_select, cspol^1);
break;
case BITBANG_CS_ACTIVE:
/* write new configration */
writeb(spcon, hw->regs + S3C2410_SPCON);
-
- if (hw->pdata->set_cs)
- hw->pdata->set_cs(hw->pdata, value, cspol);
- else
- s3c2410_gpio_setpin(hw->pdata->pin_cs, cspol);
+ hw->pdata->set_cs(hw->pdata, spi->chip_select, cspol);
break;
-
}
}
/* setup any gpio we can */
if (!hw->pdata->set_cs) {
+ hw->set_cs = s3c24xx_spi_gpiocs;
+
s3c2410_gpio_setpin(hw->pdata->pin_cs, 1);
s3c2410_gpio_cfgpin(hw->pdata->pin_cs, S3C2410_GPIO_OUTPUT);
- }
+ } else
+ hw->set_cs = hw->pdata->set_cs;
/* register our spi controller */
if (errno == 0) {
/* TODO: if error isn't found, add it dynamically */
+ errstr[len] = 0;
printk(KERN_ERR "%s: errstr :%s: not found\n", __FUNCTION__,
errstr);
errno = 1;
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/idr.h>
+#include <asm/semaphore.h>
#include "debug.h"
#include "v9fs.h"
new->iounit = 0;
new->rdir_pos = 0;
new->rdir_fcall = NULL;
+ init_MUTEX(&new->lock);
INIT_LIST_HEAD(&new->list);
return new;
}
/**
- * v9fs_fid_lookup - retrieve the right fid from a particular dentry
+ * v9fs_fid_lookup - return a locked fid from a dentry
* @dentry: dentry to look for fid in
- * @type: intent of lookup (operation or traversal)
*
- * find a fid in the dentry
+ * find a fid in the dentry, obtain its semaphore and return a reference to it.
+ * code calling lookup is responsible for releasing lock
*
* TODO: only match fids that have the same uid as current user
*
if (!return_fid) {
dprintk(DEBUG_ERROR, "Couldn't find a fid in dentry\n");
+ return_fid = ERR_PTR(-EBADF);
}
+ if(down_interruptible(&return_fid->lock))
+ return ERR_PTR(-EINTR);
+
return return_fid;
}
+
+/**
+ * v9fs_fid_clone - lookup the fid for a dentry, clone a private copy and release it
+ * @dentry: dentry to look for fid in
+ *
+ * find a fid in the dentry and then clone to a new private fid
+ *
+ * TODO: only match fids that have the same uid as current user
+ *
+ */
+
+struct v9fs_fid *v9fs_fid_clone(struct dentry *dentry)
+{
+ struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dentry->d_inode);
+ struct v9fs_fid *base_fid, *new_fid = ERR_PTR(-EBADF);
+ struct v9fs_fcall *fcall = NULL;
+ int fid, err;
+
+ base_fid = v9fs_fid_lookup(dentry);
+
+ if(IS_ERR(base_fid))
+ return base_fid;
+
+ if(base_fid) { /* clone fid */
+ fid = v9fs_get_idpool(&v9ses->fidpool);
+ if (fid < 0) {
+ eprintk(KERN_WARNING, "newfid fails!\n");
+ new_fid = ERR_PTR(-ENOSPC);
+ goto Release_Fid;
+ }
+
+ err = v9fs_t_walk(v9ses, base_fid->fid, fid, NULL, &fcall);
+ if (err < 0) {
+ dprintk(DEBUG_ERROR, "clone walk didn't work\n");
+ v9fs_put_idpool(fid, &v9ses->fidpool);
+ new_fid = ERR_PTR(err);
+ goto Free_Fcall;
+ }
+ new_fid = v9fs_fid_create(v9ses, fid);
+ if (new_fid == NULL) {
+ dprintk(DEBUG_ERROR, "out of memory\n");
+ new_fid = ERR_PTR(-ENOMEM);
+ }
+Free_Fcall:
+ kfree(fcall);
+ }
+
+Release_Fid:
+ up(&base_fid->lock);
+ return new_fid;
+}
+
+void v9fs_fid_clunk(struct v9fs_session_info *v9ses, struct v9fs_fid *fid)
+{
+ v9fs_t_clunk(v9ses, fid->fid);
+ v9fs_fid_destroy(fid);
+}
struct list_head list; /* list of fids associated with a dentry */
struct list_head active; /* XXX - debug */
+ struct semaphore lock;
+
u32 fid;
unsigned char fidopen; /* set when fid is opened */
unsigned char fidclunked; /* set when fid has already been clunked */
void v9fs_fid_destroy(struct v9fs_fid *fid);
struct v9fs_fid *v9fs_fid_create(struct v9fs_session_info *, int fid);
int v9fs_fid_insert(struct v9fs_fid *fid, struct dentry *dentry);
+struct v9fs_fid *v9fs_fid_clone(struct dentry *dentry);
+void v9fs_fid_clunk(struct v9fs_session_info *v9ses, struct v9fs_fid *fid);
+
v9fs_mux_poll_tasks[i].task = NULL;
v9fs_mux_wq = create_workqueue("v9fs");
- if (!v9fs_mux_wq)
+ if (!v9fs_mux_wq) {
+ printk(KERN_WARNING "v9fs: mux: creating workqueue failed\n");
return -ENOMEM;
+ }
return 0;
}
v9fs_error_init();
- printk(KERN_INFO "Installing v9fs 9P2000 file system support\n");
+ printk(KERN_INFO "Installing v9fs 9p2000 file system support\n");
ret = v9fs_mux_global_init();
- if (!ret)
+ if (ret) {
+ printk(KERN_WARNING "v9fs: starting mux failed\n");
return ret;
+ }
ret = register_filesystem(&v9fs_fs_type);
- if (!ret)
+ if (ret) {
+ printk(KERN_WARNING "v9fs: registering file system failed\n");
v9fs_mux_global_exit();
+ }
+
return ret;
}
struct v9fs_fid *vfid;
struct v9fs_fcall *fcall = NULL;
int omode;
- int fid = V9FS_NOFID;
int err;
dprintk(DEBUG_VFS, "inode: %p file: %p \n", inode, file);
- vfid = v9fs_fid_lookup(file->f_path.dentry);
- if (!vfid) {
- dprintk(DEBUG_ERROR, "Couldn't resolve fid from dentry\n");
- return -EBADF;
- }
-
- fid = v9fs_get_idpool(&v9ses->fidpool);
- if (fid < 0) {
- eprintk(KERN_WARNING, "newfid fails!\n");
- return -ENOSPC;
- }
+ vfid = v9fs_fid_clone(file->f_path.dentry);
+ if (IS_ERR(vfid))
+ return PTR_ERR(vfid);
- err = v9fs_t_walk(v9ses, vfid->fid, fid, NULL, &fcall);
- if (err < 0) {
- dprintk(DEBUG_ERROR, "rewalk didn't work\n");
- if (fcall && fcall->id == RWALK)
- goto clunk_fid;
- else {
- v9fs_put_idpool(fid, &v9ses->fidpool);
- goto free_fcall;
- }
- }
- kfree(fcall);
-
- /* TODO: do special things for O_EXCL, O_NOFOLLOW, O_SYNC */
- /* translate open mode appropriately */
omode = v9fs_uflags2omode(file->f_flags);
- err = v9fs_t_open(v9ses, fid, omode, &fcall);
+ err = v9fs_t_open(v9ses, vfid->fid, omode, &fcall);
if (err < 0) {
PRINT_FCALL_ERROR("open failed", fcall);
- goto clunk_fid;
- }
-
- vfid = kmalloc(sizeof(struct v9fs_fid), GFP_KERNEL);
- if (vfid == NULL) {
- dprintk(DEBUG_ERROR, "out of memory\n");
- err = -ENOMEM;
- goto clunk_fid;
+ goto Clunk_Fid;
}
file->private_data = vfid;
- vfid->fid = fid;
vfid->fidopen = 1;
vfid->fidclunked = 0;
vfid->iounit = fcall->params.ropen.iounit;
return 0;
-clunk_fid:
- v9fs_t_clunk(v9ses, fid);
-
-free_fcall:
+Clunk_Fid:
+ v9fs_fid_clunk(v9ses, vfid);
kfree(fcall);
return err;
sb = file_inode->i_sb;
v9ses = v9fs_inode2v9ses(file_inode);
v9fid = v9fs_fid_lookup(file);
-
- if (!v9fid) {
- dprintk(DEBUG_ERROR,
- "no v9fs_fid\n");
- return -EBADF;
- }
+ if(IS_ERR(v9fid))
+ return PTR_ERR(v9fid);
fid = v9fid->fid;
if (fid < 0) {
result = v9fs_t_remove(v9ses, fid, &fcall);
if (result < 0) {
PRINT_FCALL_ERROR("remove fails", fcall);
+ goto Error;
}
v9fs_put_idpool(fid, &v9ses->fidpool);
v9fs_fid_destroy(v9fid);
+Error:
kfree(fcall);
return result;
}
inode = NULL;
vfid = NULL;
v9ses = v9fs_inode2v9ses(dir);
- dfid = v9fs_fid_lookup(dentry->d_parent);
- perm = unixmode2p9mode(v9ses, mode);
+ dfid = v9fs_fid_clone(dentry->d_parent);
+ if(IS_ERR(dfid)) {
+ err = PTR_ERR(dfid);
+ goto error;
+ }
+ perm = unixmode2p9mode(v9ses, mode);
if (nd && nd->flags & LOOKUP_OPEN)
flags = nd->intent.open.flags - 1;
else
perm, v9fs_uflags2omode(flags), NULL, &fid, &qid, &iounit);
if (err)
- goto error;
+ goto clunk_dfid;
vfid = v9fs_clone_walk(v9ses, dfid->fid, dentry);
+ v9fs_fid_clunk(v9ses, dfid);
if (IS_ERR(vfid)) {
err = PTR_ERR(vfid);
vfid = NULL;
return 0;
+clunk_dfid:
+ v9fs_fid_clunk(v9ses, dfid);
+
error:
if (vfid)
v9fs_fid_destroy(vfid);
inode = NULL;
vfid = NULL;
v9ses = v9fs_inode2v9ses(dir);
- dfid = v9fs_fid_lookup(dentry->d_parent);
+ dfid = v9fs_fid_clone(dentry->d_parent);
+ if(IS_ERR(dfid)) {
+ err = PTR_ERR(dfid);
+ goto error;
+ }
+
perm = unixmode2p9mode(v9ses, mode | S_IFDIR);
err = v9fs_create(v9ses, dfid->fid, (char *) dentry->d_name.name,
if (err) {
dprintk(DEBUG_ERROR, "create error %d\n", err);
- goto error;
- }
-
- err = v9fs_t_clunk(v9ses, fid);
- if (err) {
- dprintk(DEBUG_ERROR, "clunk error %d\n", err);
- goto error;
+ goto clean_up_dfid;
}
vfid = v9fs_clone_walk(v9ses, dfid->fid, dentry);
if (IS_ERR(vfid)) {
err = PTR_ERR(vfid);
vfid = NULL;
- goto error;
+ goto clean_up_dfid;
}
+ v9fs_fid_clunk(v9ses, dfid);
inode = v9fs_inode_from_fid(v9ses, vfid->fid, dir->i_sb);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
inode = NULL;
- goto error;
+ goto clean_up_fids;
}
dentry->d_op = &v9fs_dentry_operations;
d_instantiate(dentry, inode);
return 0;
-error:
+clean_up_fids:
if (vfid)
v9fs_fid_destroy(vfid);
+clean_up_dfid:
+ v9fs_fid_clunk(v9ses, dfid);
+
+error:
return err;
}
dentry->d_op = &v9fs_dentry_operations;
dirfid = v9fs_fid_lookup(dentry->d_parent);
- if (!dirfid) {
- dprintk(DEBUG_ERROR, "no dirfid\n");
- return ERR_PTR(-EINVAL);
- }
+ if(IS_ERR(dirfid))
+ return ERR_PTR(PTR_ERR(dirfid));
dirfidnum = dirfid->fid;
- if (dirfidnum < 0) {
- dprintk(DEBUG_ERROR, "no dirfid for inode %p, #%lu\n",
- dir, dir->i_ino);
- return ERR_PTR(-EBADF);
- }
-
newfid = v9fs_get_idpool(&v9ses->fidpool);
if (newfid < 0) {
eprintk(KERN_WARNING, "newfid fails!\n");
- return ERR_PTR(-ENOSPC);
+ result = -ENOSPC;
+ goto Release_Dirfid;
}
result = v9fs_t_walk(v9ses, dirfidnum, newfid,
(char *)dentry->d_name.name, &fcall);
+ up(&dirfid->lock);
+
if (result < 0) {
if (fcall && fcall->id == RWALK)
v9fs_t_clunk(v9ses, newfid);
return NULL;
- FreeFcall:
+Release_Dirfid:
+ up(&dirfid->lock);
+
+FreeFcall:
kfree(fcall);
+
return ERR_PTR(result);
}
struct inode *old_inode = old_dentry->d_inode;
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(old_inode);
struct v9fs_fid *oldfid = v9fs_fid_lookup(old_dentry);
- struct v9fs_fid *olddirfid =
- v9fs_fid_lookup(old_dentry->d_parent);
- struct v9fs_fid *newdirfid =
- v9fs_fid_lookup(new_dentry->d_parent);
+ struct v9fs_fid *olddirfid;
+ struct v9fs_fid *newdirfid;
struct v9fs_wstat wstat;
struct v9fs_fcall *fcall = NULL;
int fid = -1;
dprintk(DEBUG_VFS, "\n");
- if ((!oldfid) || (!olddirfid) || (!newdirfid)) {
- dprintk(DEBUG_ERROR, "problem with arguments\n");
- return -EBADF;
+ if(IS_ERR(oldfid))
+ return PTR_ERR(oldfid);
+
+ olddirfid = v9fs_fid_clone(old_dentry->d_parent);
+ if(IS_ERR(olddirfid)) {
+ retval = PTR_ERR(olddirfid);
+ goto Release_lock;
+ }
+
+ newdirfid = v9fs_fid_clone(new_dentry->d_parent);
+ if(IS_ERR(newdirfid)) {
+ retval = PTR_ERR(newdirfid);
+ goto Clunk_olddir;
}
/* 9P can only handle file rename in the same directory */
if (memcmp(&olddirfid->qid, &newdirfid->qid, sizeof(newdirfid->qid))) {
dprintk(DEBUG_ERROR, "old dir and new dir are different\n");
- retval = -EPERM;
- goto FreeFcallnBail;
+ retval = -EXDEV;
+ goto Clunk_newdir;
}
fid = oldfid->fid;
dprintk(DEBUG_ERROR, "no fid for old file #%lu\n",
old_inode->i_ino);
retval = -EBADF;
- goto FreeFcallnBail;
+ goto Clunk_newdir;
}
v9fs_blank_wstat(&wstat);
retval = v9fs_t_wstat(v9ses, fid, &wstat, &fcall);
- FreeFcallnBail:
if (retval < 0)
PRINT_FCALL_ERROR("wstat error", fcall);
kfree(fcall);
+
+Clunk_newdir:
+ v9fs_fid_clunk(v9ses, newdirfid);
+
+Clunk_olddir:
+ v9fs_fid_clunk(v9ses, olddirfid);
+
+Release_lock:
+ up(&oldfid->lock);
+
return retval;
}
{
struct v9fs_fcall *fcall = NULL;
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dentry->d_inode);
- struct v9fs_fid *fid = v9fs_fid_lookup(dentry);
+ struct v9fs_fid *fid = v9fs_fid_clone(dentry);
int err = -EPERM;
dprintk(DEBUG_VFS, "dentry: %p\n", dentry);
- if (!fid) {
- dprintk(DEBUG_ERROR,
- "couldn't find fid associated with dentry\n");
- return -EBADF;
- }
+ if(IS_ERR(fid))
+ return PTR_ERR(fid);
err = v9fs_t_stat(v9ses, fid->fid, &fcall);
}
kfree(fcall);
+ v9fs_fid_clunk(v9ses, fid);
return err;
}
static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dentry->d_inode);
- struct v9fs_fid *fid = v9fs_fid_lookup(dentry);
+ struct v9fs_fid *fid = v9fs_fid_clone(dentry);
struct v9fs_fcall *fcall = NULL;
struct v9fs_wstat wstat;
int res = -EPERM;
dprintk(DEBUG_VFS, "\n");
-
- if (!fid) {
- dprintk(DEBUG_ERROR,
- "Couldn't find fid associated with dentry\n");
- return -EBADF;
- }
+ if(IS_ERR(fid))
+ return PTR_ERR(fid);
v9fs_blank_wstat(&wstat);
if (iattr->ia_valid & ATTR_MODE)
if (res >= 0)
res = inode_setattr(dentry->d_inode, iattr);
+ v9fs_fid_clunk(v9ses, fid);
return res;
}
struct v9fs_fcall *fcall = NULL;
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dentry->d_inode);
- struct v9fs_fid *fid = v9fs_fid_lookup(dentry);
+ struct v9fs_fid *fid = v9fs_fid_clone(dentry);
- if (!fid) {
- dprintk(DEBUG_ERROR, "could not resolve fid from dentry\n");
- retval = -EBADF;
- goto FreeFcall;
- }
+ if(IS_ERR(fid))
+ return PTR_ERR(fid);
if (!v9ses->extended) {
retval = -EBADF;
dprintk(DEBUG_ERROR, "not extended\n");
- goto FreeFcall;
+ goto ClunkFid;
}
dprintk(DEBUG_VFS, " %s\n", dentry->d_name.name);
goto FreeFcall;
}
- if (!fcall)
- return -EIO;
+ if (!fcall) {
+ retval = -EIO;
+ goto ClunkFid;
+ }
if (!(fcall->params.rstat.stat.mode & V9FS_DMSYMLINK)) {
retval = -EINVAL;
fcall->params.rstat.stat.extension.str, buffer);
retval = buflen;
- FreeFcall:
+FreeFcall:
kfree(fcall);
+ClunkFid:
+ v9fs_fid_clunk(v9ses, fid);
+
return retval;
}
int err;
u32 fid, perm;
struct v9fs_session_info *v9ses;
- struct v9fs_fid *dfid, *vfid;
- struct inode *inode;
+ struct v9fs_fid *dfid, *vfid = NULL;
+ struct inode *inode = NULL;
- inode = NULL;
- vfid = NULL;
v9ses = v9fs_inode2v9ses(dir);
- dfid = v9fs_fid_lookup(dentry->d_parent);
- perm = unixmode2p9mode(v9ses, mode);
-
if (!v9ses->extended) {
dprintk(DEBUG_ERROR, "not extended\n");
return -EPERM;
}
+ dfid = v9fs_fid_clone(dentry->d_parent);
+ if(IS_ERR(dfid)) {
+ err = PTR_ERR(dfid);
+ goto error;
+ }
+
+ perm = unixmode2p9mode(v9ses, mode);
+
err = v9fs_create(v9ses, dfid->fid, (char *) dentry->d_name.name,
perm, V9FS_OREAD, (char *) extension, &fid, NULL, NULL);
if (err)
- goto error;
+ goto clunk_dfid;
err = v9fs_t_clunk(v9ses, fid);
if (err)
- goto error;
+ goto clunk_dfid;
vfid = v9fs_clone_walk(v9ses, dfid->fid, dentry);
if (IS_ERR(vfid)) {
err = PTR_ERR(vfid);
vfid = NULL;
- goto error;
+ goto clunk_dfid;
}
inode = v9fs_inode_from_fid(v9ses, vfid->fid, dir->i_sb);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
inode = NULL;
- goto error;
+ goto free_vfid;
}
dentry->d_op = &v9fs_dentry_operations;
d_instantiate(dentry, inode);
return 0;
-error:
- if (vfid)
- v9fs_fid_destroy(vfid);
+free_vfid:
+ v9fs_fid_destroy(vfid);
+
+clunk_dfid:
+ v9fs_fid_clunk(v9ses, dfid);
+error:
return err;
}
struct dentry *dentry)
{
int retval;
+ struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir);
struct v9fs_fid *oldfid;
char *name;
dprintk(DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name,
old_dentry->d_name.name);
- oldfid = v9fs_fid_lookup(old_dentry);
- if (!oldfid) {
- dprintk(DEBUG_ERROR, "can't find oldfid\n");
- return -EPERM;
- }
+ oldfid = v9fs_fid_clone(old_dentry);
+ if(IS_ERR(oldfid))
+ return PTR_ERR(oldfid);
name = __getname();
- if (unlikely(!name))
- return -ENOMEM;
+ if (unlikely(!name)) {
+ retval = -ENOMEM;
+ goto clunk_fid;
+ }
sprintf(name, "%d\n", oldfid->fid);
retval = v9fs_vfs_mkspecial(dir, dentry, V9FS_DMLINK, name);
__putname(name);
+clunk_fid:
+ v9fs_fid_clunk(v9ses, oldfid);
return retval;
}
retval = PTR_ERR(interpreter);
if (IS_ERR(interpreter))
goto out_free_interp;
+
+ /*
+ * If the binary is not readable then enforce
+ * mm->dumpable = 0 regardless of the interpreter's
+ * permissions.
+ */
+ if (file_permission(interpreter, MAY_READ) < 0)
+ bprm->interp_flags |= BINPRM_FLAGS_ENFORCE_NONDUMP;
+
retval = kernel_read(interpreter, 0, bprm->buf,
BINPRM_BUF_SIZE);
if (retval != BINPRM_BUF_SIZE) {
*/
static int maydump(struct vm_area_struct *vma)
{
+ /* The vma can be set up to tell us the answer directly. */
+ if (vma->vm_flags & VM_ALWAYSDUMP)
+ return 1;
+
/* Do not dump I/O mapped devices or special mappings */
if (vma->vm_flags & (VM_IO | VM_RESERVED))
return 0;
return sz;
}
+static struct vm_area_struct *first_vma(struct task_struct *tsk,
+ struct vm_area_struct *gate_vma)
+{
+ struct vm_area_struct *ret = tsk->mm->mmap;
+
+ if (ret)
+ return ret;
+ return gate_vma;
+}
+/*
+ * Helper function for iterating across a vma list. It ensures that the caller
+ * will visit `gate_vma' prior to terminating the search.
+ */
+static struct vm_area_struct *next_vma(struct vm_area_struct *this_vma,
+ struct vm_area_struct *gate_vma)
+{
+ struct vm_area_struct *ret;
+
+ ret = this_vma->vm_next;
+ if (ret)
+ return ret;
+ if (this_vma == gate_vma)
+ return NULL;
+ return gate_vma;
+}
+
/*
* Actual dumper
*
int segs;
size_t size = 0;
int i;
- struct vm_area_struct *vma;
+ struct vm_area_struct *vma, *gate_vma;
struct elfhdr *elf = NULL;
loff_t offset = 0, dataoff, foffset;
unsigned long limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
segs += ELF_CORE_EXTRA_PHDRS;
#endif
+ gate_vma = get_gate_vma(current);
+ if (gate_vma != NULL)
+ segs++;
+
/* Set up header */
fill_elf_header(elf, segs + 1); /* including notes section */
dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
/* Write program headers for segments dump */
- for (vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
+ for (vma = first_vma(current, gate_vma); vma != NULL;
+ vma = next_vma(vma, gate_vma)) {
struct elf_phdr phdr;
size_t sz;
/* Align to page */
DUMP_SEEK(dataoff - foffset);
- for (vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
+ for (vma = first_vma(current, gate_vma); vma != NULL;
+ vma = next_vma(vma, gate_vma)) {
unsigned long addr;
if (!maydump(vma))
goto error;
}
+ /*
+ * If the binary is not readable then enforce
+ * mm->dumpable = 0 regardless of the interpreter's
+ * permissions.
+ */
+ if (file_permission(interpreter, MAY_READ) < 0)
+ bprm->interp_flags |= BINPRM_FLAGS_ENFORCE_NONDUMP;
+
retval = kernel_read(interpreter, 0, bprm->buf,
BINPRM_BUF_SIZE);
if (retval < 0)
int ret = 0;
BUG_ON(!PageLocked(page));
- if (PageDirty(page) || PageWriteback(page))
+ if (PageWriteback(page))
return 0;
if (mapping == NULL) { /* can this still happen? */
spin_lock(&mapping->private_lock);
ret = drop_buffers(page, &buffers_to_free);
spin_unlock(&mapping->private_lock);
+
+ /*
+ * If the filesystem writes its buffers by hand (eg ext3)
+ * then we can have clean buffers against a dirty page. We
+ * clean the page here; otherwise the VM will never notice
+ * that the filesystem did any IO at all.
+ *
+ * Also, during truncate, discard_buffer will have marked all
+ * the page's buffers clean. We discover that here and clean
+ * the page also.
+ */
+ if (ret)
+ cancel_dirty_page(page, PAGE_CACHE_SIZE);
out:
if (buffers_to_free) {
struct buffer_head *bh = buffers_to_free;
WARN_ON(inode->i_state & I_WILL_FREE);
if ((wbc->sync_mode != WB_SYNC_ALL) && (inode->i_state & I_LOCK)) {
+ struct address_space *mapping = inode->i_mapping;
+ int ret;
+
list_move(&inode->i_list, &inode->i_sb->s_dirty);
- return 0;
+
+ /*
+ * Even if we don't actually write the inode itself here,
+ * we can at least start some of the data writeout..
+ */
+ spin_unlock(&inode_lock);
+ ret = do_writepages(mapping, wbc);
+ spin_lock(&inode_lock);
+ return ret;
}
/*
}
int
-nfs3svc_encode_entry(struct readdir_cd *cd, const char *name,
- int namlen, loff_t offset, ino_t ino, unsigned int d_type)
+nfs3svc_encode_entry(void *cd, const char *name,
+ int namlen, loff_t offset, u64 ino, unsigned int d_type)
{
return encode_entry(cd, name, namlen, offset, ino, d_type, 0);
}
int
-nfs3svc_encode_entry_plus(struct readdir_cd *cd, const char *name,
- int namlen, loff_t offset, ino_t ino, unsigned int d_type)
+nfs3svc_encode_entry_plus(void *cd, const char *name,
+ int namlen, loff_t offset, u64 ino,
+ unsigned int d_type)
{
return encode_entry(cd, name, namlen, offset, ino, d_type, 1);
}
}
static int
-nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen,
- loff_t offset, ino_t ino, unsigned int d_type)
+nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
+ loff_t offset, u64 ino, unsigned int d_type)
{
+ struct readdir_cd *ccd = ccdv;
struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
int buflen;
__be32 *p = cd->buffer;
.pg_prog = NFS_ACL_PROGRAM,
.pg_nvers = NFSD_ACL_NRVERS,
.pg_vers = nfsd_acl_versions,
- .pg_name = "nfsd",
+ .pg_name = "nfsacl",
.pg_class = "nfsd",
.pg_stats = &nfsd_acl_svcstats,
.pg_authenticate = &svc_set_client,
switch(change) {
case NFSD_SET:
nfsd_versions[vers] = nfsd_version[vers];
- break;
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
if (vers < NFSD_ACL_NRVERS)
- nfsd_acl_version[vers] = nfsd_acl_version[vers];
+ nfsd_acl_versions[vers] = nfsd_acl_version[vers];
#endif
+ break;
case NFSD_CLEAR:
nfsd_versions[vers] = NULL;
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
if (vers < NFSD_ACL_NRVERS)
- nfsd_acl_version[vers] = NULL;
+ nfsd_acl_versions[vers] = NULL;
#endif
break;
case NFSD_TEST:
}
int
-nfssvc_encode_entry(struct readdir_cd *ccd, const char *name,
- int namlen, loff_t offset, ino_t ino, unsigned int d_type)
+nfssvc_encode_entry(void *ccdv, const char *name,
+ int namlen, loff_t offset, u64 ino, unsigned int d_type)
{
+ struct readdir_cd *ccd = ccdv;
struct nfsd_readdirres *cd = container_of(ccd, struct nfsd_readdirres, common);
__be32 *p = cd->buffer;
int buflen, slen;
rqstp->rq_res.page_len = size;
} else if (page != pp[-1]) {
get_page(page);
- put_page(*pp);
+ if (*pp)
+ put_page(*pp);
*pp = page;
rqstp->rq_resused++;
rqstp->rq_res.page_len += size;
__be32 err;
int host_err;
__u32 v_mtime=0, v_atime=0;
- int v_mode=0;
err = nfserr_perm;
if (!flen)
goto out;
if (createmode == NFS3_CREATE_EXCLUSIVE) {
- /* while the verifier would fit in mtime+atime,
- * solaris7 gets confused (bugid 4218508) if these have
- * the high bit set, so we use the mode as well
+ /* solaris7 gets confused (bugid 4218508) if these have
+ * the high bit set, so just clear the high bits.
*/
v_mtime = verifier[0]&0x7fffffff;
v_atime = verifier[1]&0x7fffffff;
- v_mode = S_IFREG
- | ((verifier[0]&0x80000000) >> (32-7)) /* u+x */
- | ((verifier[1]&0x80000000) >> (32-9)) /* u+r */
- ;
}
if (dchild->d_inode) {
case NFS3_CREATE_EXCLUSIVE:
if ( dchild->d_inode->i_mtime.tv_sec == v_mtime
&& dchild->d_inode->i_atime.tv_sec == v_atime
- && dchild->d_inode->i_mode == v_mode
&& dchild->d_inode->i_size == 0 )
break;
/* fallthru */
}
if (createmode == NFS3_CREATE_EXCLUSIVE) {
- /* Cram the verifier into atime/mtime/mode */
+ /* Cram the verifier into atime/mtime */
iap->ia_valid = ATTR_MTIME|ATTR_ATIME
- | ATTR_MTIME_SET|ATTR_ATIME_SET
- | ATTR_MODE;
+ | ATTR_MTIME_SET|ATTR_ATIME_SET;
/* XXX someone who knows this better please fix it for nsec */
iap->ia_mtime.tv_sec = v_mtime;
iap->ia_atime.tv_sec = v_atime;
iap->ia_mtime.tv_nsec = 0;
iap->ia_atime.tv_nsec = 0;
- iap->ia_mode = v_mode;
}
/* Set file attributes.
- * Mode has already been set but we might need to reset it
- * for CREATE_EXCLUSIVE
* Irix appears to send along the gid when it tries to
* implement setgid directories via NFS. Clear out all that cruft.
*/
set_attr:
- if ((iap->ia_valid &= ~(ATTR_UID|ATTR_GID)) != 0) {
+ if ((iap->ia_valid &= ~(ATTR_UID|ATTR_GID|ATTR_MODE)) != 0) {
__be32 err2 = nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
if (err2)
err = err2;
*/
__be32
nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
- struct readdir_cd *cdp, encode_dent_fn func)
+ struct readdir_cd *cdp, filldir_t func)
{
__be32 err;
int host_err;
do {
cdp->err = nfserr_eof; /* will be cleared on successful read */
- host_err = vfs_readdir(file, (filldir_t) func, cdp);
+ host_err = vfs_readdir(file, func, cdp);
} while (host_err >=0 && cdp->err == nfs_ok);
if (host_err)
err = nfserrno(host_err);
if (task) {
task_lock(task);
- ns = task->nsproxy->mnt_ns;
- if (ns)
- get_mnt_ns(ns);
+ if (task->nsproxy) {
+ ns = task->nsproxy->mnt_ns;
+ if (ns)
+ get_mnt_ns(ns);
+ }
task_unlock(task);
put_task_struct(task);
}
#define ATA_PRIMARY_CMD 0x1F0
#define ATA_PRIMARY_CTL 0x3F6
-#define ATA_PRIMARY_IRQ 14
+#define ATA_PRIMARY_IRQ(dev) 14
#define ATA_SECONDARY_CMD 0x170
#define ATA_SECONDARY_CTL 0x376
-#define ATA_SECONDARY_IRQ 15
+#define ATA_SECONDARY_IRQ(dev) 15
#endif
# define VDSO_PRELINK 0
#endif
-#define VDSO_COMPAT_SYM(x) \
- (VDSO_COMPAT_BASE + (unsigned long)(x) - VDSO_PRELINK)
-
#define VDSO_SYM(x) \
- (VDSO_BASE + (unsigned long)(x) - VDSO_PRELINK)
+ (VDSO_COMPAT_BASE + (unsigned long)(x) - VDSO_PRELINK)
#define VDSO_HIGH_EHDR ((const struct elfhdr *) VDSO_HIGH_BASE)
#define VDSO_EHDR ((const struct elfhdr *) VDSO_COMPAT_BASE)
#define VDSO_ENTRY VDSO_SYM(&__kernel_vsyscall)
+#ifndef CONFIG_COMPAT_VDSO
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int executable_stack);
+#endif
extern unsigned int vdso_enabled;
NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_COMPAT_BASE); \
} while (0)
-/*
- * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
- * extra segments containing the vsyscall DSO contents. Dumping its
- * contents makes post-mortem fully interpretable later without matching up
- * the same kernel and hardware config to see what PC values meant.
- * Dumping its extra ELF program headers includes all the other information
- * a debugger needs to easily find how the vsyscall DSO was being used.
- */
-#define ELF_CORE_EXTRA_PHDRS (VDSO_HIGH_EHDR->e_phnum)
-#define ELF_CORE_WRITE_EXTRA_PHDRS \
-do { \
- const struct elf_phdr *const vsyscall_phdrs = \
- (const struct elf_phdr *) (VDSO_HIGH_BASE \
- + VDSO_HIGH_EHDR->e_phoff); \
- int i; \
- Elf32_Off ofs = 0; \
- for (i = 0; i < VDSO_HIGH_EHDR->e_phnum; ++i) { \
- struct elf_phdr phdr = vsyscall_phdrs[i]; \
- if (phdr.p_type == PT_LOAD) { \
- BUG_ON(ofs != 0); \
- ofs = phdr.p_offset = offset; \
- phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz); \
- phdr.p_filesz = phdr.p_memsz; \
- offset += phdr.p_filesz; \
- } \
- else \
- phdr.p_offset += ofs; \
- phdr.p_paddr = 0; /* match other core phdrs */ \
- DUMP_WRITE(&phdr, sizeof(phdr)); \
- } \
-} while (0)
-#define ELF_CORE_WRITE_EXTRA_DATA \
-do { \
- const struct elf_phdr *const vsyscall_phdrs = \
- (const struct elf_phdr *) (VDSO_HIGH_BASE \
- + VDSO_HIGH_EHDR->e_phoff); \
- int i; \
- for (i = 0; i < VDSO_HIGH_EHDR->e_phnum; ++i) { \
- if (vsyscall_phdrs[i].p_type == PT_LOAD) \
- DUMP_WRITE((void *) vsyscall_phdrs[i].p_vaddr, \
- PAGE_ALIGN(vsyscall_phdrs[i].p_memsz)); \
- } \
-} while (0)
-
#endif
#endif
extern unsigned long __FIXADDR_TOP;
#else
#define __FIXADDR_TOP 0xfffff000
+#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO)
+#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1)
#endif
#ifndef __ASSEMBLY__
#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
+#ifndef CONFIG_COMPAT_VDSO
#define __HAVE_ARCH_GATE_AREA 1
+#endif
#endif /* __KERNEL__ */
#endif /* _I386_PAGE_H */
--- /dev/null
+#ifndef __ASM_POWERPC_LIBATA_PORTMAP_H
+#define __ASM_POWERPC_LIBATA_PORTMAP_H
+
+#define ATA_PRIMARY_CMD 0x1F0
+#define ATA_PRIMARY_CTL 0x3F6
+#define ATA_PRIMARY_IRQ(dev) pci_get_legacy_ide_irq(dev, 0)
+
+#define ATA_SECONDARY_CMD 0x170
+#define ATA_SECONDARY_CTL 0x376
+#define ATA_SECONDARY_IRQ(dev) pci_get_legacy_ide_irq(dev, 1)
+
+#endif
case 1: __put_user_asm(x,ptr,retval,"b","b","iq",-EFAULT); break;\
case 2: __put_user_asm(x,ptr,retval,"w","w","ir",-EFAULT); break;\
case 4: __put_user_asm(x,ptr,retval,"l","k","ir",-EFAULT); break;\
- case 8: __put_user_asm(x,ptr,retval,"q","","ir",-EFAULT); break;\
+ case 8: __put_user_asm(x,ptr,retval,"q","","Zr",-EFAULT); break;\
default: __put_user_bad(); \
} \
} while (0)
return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
}
-/*
+/**
* rol32 - rotate a 32-bit value left
- *
* @word: value to rotate
* @shift: bits to roll
*/
return (word << shift) | (word >> (32 - shift));
}
-/*
+/**
* ror32 - rotate a 32-bit value right
- *
* @word: value to rotate
* @shift: bits to roll
*/
KVM_EXIT_HLT = 5,
KVM_EXIT_MMIO = 6,
KVM_EXIT_IRQ_WINDOW_OPEN = 7,
+ KVM_EXIT_SHUTDOWN = 8,
};
/* for KVM_RUN */
* Register FIS clearing BSY */
ATA_FLAG_DEBUGMSG = (1 << 13),
ATA_FLAG_SETXFER_POLLING= (1 << 14), /* use polling for SETXFER */
+ ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be
void (*dev_select)(struct ata_port *ap, unsigned int device);
void (*phy_reset) (struct ata_port *ap); /* obsolete */
- void (*set_mode) (struct ata_port *ap);
+ int (*set_mode) (struct ata_port *ap, struct ata_device **r_failed_dev);
void (*post_set_mode) (struct ata_port *ap);
- int (*check_atapi_dma) (struct ata_queued_cmd *qc);
+ int (*check_atapi_dma) (struct ata_queued_cmd *qc);
void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
INIT_LIST_HEAD(old);
}
-/*
+/**
* list_replace_rcu - replace old entry by new one
* @old : the element to be replaced
* @new : the new element to insert
*
- * The old entry will be replaced with the new entry atomically.
- * Note: 'old' should not be empty.
+ * The @old entry will be replaced with the @new entry atomically.
+ * Note: @old should not be empty.
*/
static inline void list_replace_rcu(struct list_head *old,
struct list_head *new)
}
}
-/*
+/**
* hlist_replace_rcu - replace old entry by new one
* @old : the element to be replaced
* @new : the new element to insert
*
- * The old entry will be replaced with the new entry atomically.
+ * The @old entry will be replaced with the @new entry atomically.
*/
static inline void hlist_replace_rcu(struct hlist_node *old,
struct hlist_node *new)
#define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */
#define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */
#define VM_INSERTPAGE 0x02000000 /* The vma has had "vm_insert_page()" done on it */
+#define VM_ALWAYSDUMP 0x04000000 /* Always include in core dumps */
#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
extern void __mutex_init(struct mutex *lock, const char *name,
struct lock_class_key *key);
-/***
+/**
* mutex_is_locked - is the mutex locked
* @lock: the mutex to be queried
*
struct readdir_cd {
__be32 err; /* 0, nfserr, or nfserr_eof */
};
-typedef int (*encode_dent_fn)(struct readdir_cd *, const char *,
- int, loff_t, ino_t, unsigned int);
typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);
extern struct svc_program nfsd_program;
int nfsd_truncate(struct svc_rqst *, struct svc_fh *,
unsigned long size);
__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
- loff_t *, struct readdir_cd *, encode_dent_fn);
+ loff_t *, struct readdir_cd *, filldir_t);
__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
struct kstatfs *);
static __inline__ struct svc_fh *
fh_copy(struct svc_fh *dst, struct svc_fh *src)
{
- if (src->fh_dentry || src->fh_locked) {
- struct dentry *dentry = src->fh_dentry;
- printk(KERN_ERR "fh_copy: copying %s/%s, already verified!\n",
- dentry->d_parent->d_name.name, dentry->d_name.name);
- }
+ WARN_ON(src->fh_dentry || src->fh_locked);
*dst = *src;
return dst;
dfprintk(FILEOP, "nfsd: fh_lock(%s) locked = %d\n",
SVCFH_fmt(fhp), fhp->fh_locked);
- if (!fhp->fh_dentry) {
- printk(KERN_ERR "fh_lock: fh not verified!\n");
- return;
- }
+ BUG_ON(!dentry);
+
if (fhp->fh_locked) {
printk(KERN_WARNING "fh_lock: %s/%s already locked!\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
static inline void
fh_unlock(struct svc_fh *fhp)
{
- if (!fhp->fh_dentry)
- printk(KERN_ERR "fh_unlock: fh not verified!\n");
+ BUG_ON(!fhp->fh_dentry);
if (fhp->fh_locked) {
fill_post_wcc(fhp);
int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *, struct nfsd_statfsres *);
int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *, struct nfsd_readdirres *);
-int nfssvc_encode_entry(struct readdir_cd *, const char *name,
- int namlen, loff_t offset, ino_t ino, unsigned int);
+int nfssvc_encode_entry(void *, const char *name,
+ int namlen, loff_t offset, u64 ino, unsigned int);
int nfssvc_release_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);
struct nfsd3_attrstat *);
int nfs3svc_release_fhandle2(struct svc_rqst *, __be32 *,
struct nfsd3_fhandle_pair *);
-int nfs3svc_encode_entry(struct readdir_cd *, const char *name,
- int namlen, loff_t offset, ino_t ino,
+int nfs3svc_encode_entry(void *, const char *name,
+ int namlen, loff_t offset, u64 ino,
unsigned int);
-int nfs3svc_encode_entry_plus(struct readdir_cd *, const char *name,
- int namlen, loff_t offset, ino_t ino,
+int nfs3svc_encode_entry_plus(void *, const char *name,
+ int namlen, loff_t offset, u64 ino,
unsigned int);
/* Helper functions for NFSv3 ACL code */
__be32 *nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p,
struct page *page, int rw);
extern void md_do_sync(mddev_t *mddev);
extern void md_new_event(mddev_t *mddev);
-
+extern void md_allow_write(mddev_t *mddev);
#endif /* CONFIG_MD */
#endif
#include <linux/plist.h>
#include <linux/spinlock_types.h>
-/*
+/**
* The rt_mutex structure
*
* @wait_lock: spinlock to protect the structure
#define DEFINE_RT_MUTEX(mutexname) \
struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
-/***
+/**
* rt_mutex_is_locked - is the mutex locked
* @lock: the mutex to be queried
*
*
* Each request/reply pair can have at most one "payload", plus two pages,
* one for the request, and one for the reply.
+ * We using ->sendfile to return read data, we might need one extra page
+ * if the request is not page-aligned. So add another '1'.
*/
-#define RPCSVC_MAXPAGES ((RPCSVC_MAXPAYLOAD+PAGE_SIZE-1)/PAGE_SIZE + 2)
+#define RPCSVC_MAXPAGES ((RPCSVC_MAXPAYLOAD+PAGE_SIZE-1)/PAGE_SIZE \
+ + 2 + 1)
static inline u32 svc_getnl(struct kvec *iov)
{
init_timer(timer);
}
-/***
+/**
* timer_pending - is a timer pending?
* @timer: the timer in question
*
extern unsigned long next_timer_interrupt(void);
-/***
+/**
* add_timer - start a timer
* @timer: the timer to be added
*
gate_vma.vm_mm = NULL;
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
- gate_vma.vm_page_prot = PAGE_READONLY;
- gate_vma.vm_flags = 0;
+ gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
+ gate_vma.vm_page_prot = __P101;
+ /*
+ * Make sure the vDSO gets into every core dump.
+ * Dumping its contents makes post-mortem fully interpretable later
+ * without matching up the same kernel and hardware config to see
+ * what PC values meant.
+ */
+ gate_vma.vm_flags |= VM_ALWAYSDUMP;
return 0;
}
__initcall(gate_vma_init);
do_invalidatepage(page, partial);
}
+/*
+ * This cancels just the dirty bit on the kernel page itself, it
+ * does NOT actually remove dirty bits on any mmap's that may be
+ * around. It also leaves the page tagged dirty, so any sync
+ * activity will still find it on the dirty lists, and in particular,
+ * clear_page_dirty_for_io() will still look at the dirty bits in
+ * the VM.
+ *
+ * Doing this should *normally* only ever be done when a page
+ * is truncated, and is not actually mapped anywhere at all. However,
+ * fs/buffer.c does this when it notices that somebody has cleaned
+ * out all the buffers on a page without actually doing it through
+ * the VM. Can you say "ext3 is horribly ugly"? Tought you could.
+ */
void cancel_dirty_page(struct page *page, unsigned int account_size)
{
- /* If we're cancelling the page, it had better not be mapped any more */
- if (page_mapped(page)) {
- static unsigned int warncount;
-
- WARN_ON(++warncount < 5);
- }
-
if (TestClearPageDirty(page)) {
struct address_space *mapping = page->mapping;
if (mapping && mapping_cap_account_dirty(mapping)) {
pagevec_release(&pvec);
cond_resched();
}
- WARN_ON_ONCE(ret);
return ret;
}
EXPORT_SYMBOL_GPL(invalidate_inode_pages2_range);
err_bad_vers:
#ifdef RPC_PARANOIA
- printk("svc: unknown version (%d)\n", vers);
+ printk("svc: unknown version (%d for prog %d, %s)\n",
+ vers, prog, progp->pg_name);
#endif
serv->sv_stats->rpcbadfmt++;
svc_putnl(resv, RPC_PROG_MISMATCH);
schedule_timeout_uninterruptible(msecs_to_jiffies(500));
rqstp->rq_pages[i] = p;
}
+ rqstp->rq_pages[i++] = NULL; /* this might be seen in nfs_read_actor */
+ BUG_ON(pages >= RPCSVC_MAXPAGES);
/* Make arg->head point to first page and arg->pages point to rest */
arg = &rqstp->rq_arg;
projects / linux-beck.git / commitdiff