#include "internal.h"
#include "iostat.h"
+#include "pnfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
struct completion completion; /* wait for i/o completion */
/* commit state */
- struct list_head rewrite_list; /* saved nfs_write_data structs */
- struct nfs_commit_data *commit_data; /* special write_data for commits */
+ struct nfs_mds_commit_info mds_cinfo; /* Storage for cinfo */
+ struct pnfs_ds_commit_info ds_cinfo; /* Storage for cinfo */
+ struct work_struct work;
int flags;
#define NFS_ODIRECT_DO_COMMIT (1) /* an unstable reply was received */
#define NFS_ODIRECT_RESCHED_WRITES (2) /* write verification failed */
struct nfs_writeverf verf; /* unstable write verifier */
};
+static const struct nfs_pgio_completion_ops nfs_direct_write_completion_ops;
+static const struct nfs_commit_completion_ops nfs_direct_commit_completion_ops;
static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode);
-static const struct rpc_call_ops nfs_write_direct_ops;
+static void nfs_direct_write_schedule_work(struct work_struct *work);
static inline void get_dreq(struct nfs_direct_req *dreq)
{
page_cache_release(pages[i]);
}
+void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
+ struct nfs_direct_req *dreq)
+{
+ cinfo->lock = &dreq->lock;
+ cinfo->mds = &dreq->mds_cinfo;
+ cinfo->ds = &dreq->ds_cinfo;
+ cinfo->dreq = dreq;
+ cinfo->completion_ops = &nfs_direct_commit_completion_ops;
+}
+
static inline struct nfs_direct_req *nfs_direct_req_alloc(void)
{
struct nfs_direct_req *dreq;
kref_init(&dreq->kref);
kref_get(&dreq->kref);
init_completion(&dreq->completion);
- INIT_LIST_HEAD(&dreq->rewrite_list);
+ dreq->mds_cinfo.ncommit = 0;
+ atomic_set(&dreq->mds_cinfo.rpcs_out, 0);
+ INIT_LIST_HEAD(&dreq->mds_cinfo.list);
+ INIT_WORK(&dreq->work, nfs_direct_write_schedule_work);
+ memset(&dreq->ds_cinfo, 0, sizeof(dreq->ds_cinfo));
dreq->iocb = NULL;
dreq->ctx = NULL;
dreq->l_ctx = NULL;
return result;
}
-static void nfs_direct_writehdr_release(struct nfs_write_header *whdr)
-{
- struct nfs_write_data *data = &whdr->rpc_data;
-
- if (data->pages.pagevec != data->pages.page_array)
- kfree(data->pages.pagevec);
- nfs_writehdr_free(&whdr->header);
-}
-
-static void nfs_direct_free_writedata(struct nfs_direct_req *dreq)
-{
- while (!list_empty(&dreq->rewrite_list)) {
- struct nfs_pgio_header *hdr = list_entry(dreq->rewrite_list.next, struct nfs_pgio_header, pages);
- struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header);
- struct nfs_page_array *p = &whdr->rpc_data.pages;
-
- list_del(&hdr->pages);
- nfs_direct_release_pages(p->pagevec, p->npages);
- nfs_direct_writehdr_release(whdr);
- }
-}
-
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
{
- struct inode *inode = dreq->inode;
- struct list_head *p;
- struct nfs_write_data *data;
- struct nfs_pgio_header *hdr;
- struct rpc_task *task;
- struct rpc_message msg = {
- .rpc_cred = dreq->ctx->cred,
- };
- struct rpc_task_setup task_setup_data = {
- .rpc_client = NFS_CLIENT(inode),
- .rpc_message = &msg,
- .callback_ops = &nfs_write_direct_ops,
- .workqueue = nfsiod_workqueue,
- .flags = RPC_TASK_ASYNC,
- };
+ struct nfs_pageio_descriptor desc;
+ struct nfs_page *req, *tmp;
+ LIST_HEAD(reqs);
+ struct nfs_commit_info cinfo;
+ LIST_HEAD(failed);
+
+ nfs_init_cinfo_from_dreq(&cinfo, dreq);
+ pnfs_recover_commit_reqs(dreq->inode, &reqs, &cinfo);
+ spin_lock(cinfo.lock);
+ nfs_scan_commit_list(&cinfo.mds->list, &reqs, &cinfo, 0);
+ spin_unlock(cinfo.lock);
dreq->count = 0;
get_dreq(dreq);
- list_for_each(p, &dreq->rewrite_list) {
- hdr = list_entry(p, struct nfs_pgio_header, pages);
- data = &(container_of(hdr, struct nfs_write_header, header))->rpc_data;
-
- get_dreq(dreq);
-
- /* Use stable writes */
- data->args.stable = NFS_FILE_SYNC;
-
- /*
- * Reset data->res.
- */
- nfs_fattr_init(&data->fattr);
- data->res.count = data->args.count;
- memset(&data->verf, 0, sizeof(data->verf));
-
- /*
- * Reuse data->task; data->args should not have changed
- * since the original request was sent.
- */
- task_setup_data.task = &data->task;
- task_setup_data.callback_data = data;
- msg.rpc_argp = &data->args;
- msg.rpc_resp = &data->res;
- NFS_PROTO(inode)->write_setup(data, &msg);
-
- /*
- * We're called via an RPC callback, so BKL is already held.
- */
- task = rpc_run_task(&task_setup_data);
- if (!IS_ERR(task))
- rpc_put_task(task);
-
- dprintk("NFS: %5u rescheduled direct write call (req %s/%Ld, %u bytes @ offset %Lu)\n",
- data->task.tk_pid,
- inode->i_sb->s_id,
- (long long)NFS_FILEID(inode),
- data->args.count,
- (unsigned long long)data->args.offset);
- }
+ nfs_pageio_init_write(&desc, dreq->inode, FLUSH_STABLE,
+ &nfs_direct_write_completion_ops);
+ desc.pg_dreq = dreq;
- if (put_dreq(dreq))
- nfs_direct_write_complete(dreq, inode);
-}
+ list_for_each_entry_safe(req, tmp, &reqs, wb_list) {
+ if (!nfs_pageio_add_request(&desc, req)) {
+ nfs_list_add_request(req, &failed);
+ spin_lock(cinfo.lock);
+ dreq->flags = 0;
+ dreq->error = -EIO;
+ spin_unlock(cinfo.lock);
+ }
+ }
+ nfs_pageio_complete(&desc);
-static void nfs_direct_commit_result(struct rpc_task *task, void *calldata)
-{
- struct nfs_commit_data *data = calldata;
+ while (!list_empty(&failed)) {
+ page_cache_release(req->wb_page);
+ nfs_release_request(req);
+ nfs_unlock_request(req);
+ }
- /* Call the NFS version-specific code */
- NFS_PROTO(data->inode)->commit_done(task, data);
+ if (put_dreq(dreq))
+ nfs_direct_write_complete(dreq, dreq->inode);
}
-static void nfs_direct_commit_release(void *calldata)
+static void nfs_direct_commit_complete(struct nfs_commit_data *data)
{
- struct nfs_commit_data *data = calldata;
struct nfs_direct_req *dreq = data->dreq;
+ struct nfs_commit_info cinfo;
+ struct nfs_page *req;
int status = data->task.tk_status;
+ nfs_init_cinfo_from_dreq(&cinfo, dreq);
if (status < 0) {
dprintk("NFS: %5u commit failed with error %d.\n",
- data->task.tk_pid, status);
+ data->task.tk_pid, status);
dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
} else if (memcmp(&dreq->verf, &data->verf, sizeof(data->verf))) {
dprintk("NFS: %5u commit verify failed\n", data->task.tk_pid);
}
dprintk("NFS: %5u commit returned %d\n", data->task.tk_pid, status);
- nfs_direct_write_complete(dreq, data->inode);
- nfs_commit_free(data);
+ while (!list_empty(&data->pages)) {
+ req = nfs_list_entry(data->pages.next);
+ nfs_list_remove_request(req);
+ if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES) {
+ /* Note the rewrite will go through mds */
+ nfs_mark_request_commit(req, NULL, &cinfo);
+ } else {
+ page_cache_release(req->wb_page);
+ nfs_release_request(req);
+ }
+ nfs_unlock_request(req);
+ }
+
+ if (atomic_dec_and_test(&cinfo.mds->rpcs_out))
+ nfs_direct_write_complete(dreq, data->inode);
}
-static const struct rpc_call_ops nfs_commit_direct_ops = {
- .rpc_call_prepare = nfs_commit_prepare,
- .rpc_call_done = nfs_direct_commit_result,
- .rpc_release = nfs_direct_commit_release,
+static void nfs_direct_error_cleanup(struct nfs_inode *nfsi)
+{
+ /* There is no lock to clear */
+}
+
+static const struct nfs_commit_completion_ops nfs_direct_commit_completion_ops = {
+ .completion = nfs_direct_commit_complete,
+ .error_cleanup = nfs_direct_error_cleanup,
};
static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
{
- struct nfs_commit_data *data = dreq->commit_data;
- struct rpc_task *task;
- struct rpc_message msg = {
- .rpc_argp = &data->args,
- .rpc_resp = &data->res,
- .rpc_cred = dreq->ctx->cred,
- };
- struct rpc_task_setup task_setup_data = {
- .task = &data->task,
- .rpc_client = NFS_CLIENT(dreq->inode),
- .rpc_message = &msg,
- .callback_ops = &nfs_commit_direct_ops,
- .callback_data = data,
- .workqueue = nfsiod_workqueue,
- .flags = RPC_TASK_ASYNC,
- };
-
- data->inode = dreq->inode;
- data->cred = msg.rpc_cred;
-
- data->args.fh = NFS_FH(data->inode);
- data->args.offset = 0;
- data->args.count = 0;
- data->res.fattr = &data->fattr;
- data->res.verf = &data->verf;
- nfs_fattr_init(&data->fattr);
-
- NFS_PROTO(data->inode)->commit_setup(data, &msg);
-
- /* Note: task.tk_ops->rpc_release will free dreq->commit_data */
- dreq->commit_data = NULL;
-
- dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
-
- task = rpc_run_task(&task_setup_data);
- if (!IS_ERR(task))
- rpc_put_task(task);
+ int res;
+ struct nfs_commit_info cinfo;
+ LIST_HEAD(mds_list);
+
+ nfs_init_cinfo_from_dreq(&cinfo, dreq);
+ nfs_scan_commit(dreq->inode, &mds_list, &cinfo);
+ res = nfs_generic_commit_list(dreq->inode, &mds_list, 0, &cinfo);
+ if (res < 0) /* res == -ENOMEM */
+ nfs_direct_write_reschedule(dreq);
}
-static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
+static void nfs_direct_write_schedule_work(struct work_struct *work)
{
+ struct nfs_direct_req *dreq = container_of(work, struct nfs_direct_req, work);
int flags = dreq->flags;
dreq->flags = 0;
nfs_direct_write_reschedule(dreq);
break;
default:
- if (dreq->commit_data != NULL)
- nfs_commit_free(dreq->commit_data);
- nfs_direct_free_writedata(dreq);
- nfs_zap_mapping(inode, inode->i_mapping);
+ nfs_zap_mapping(dreq->inode, dreq->inode->i_mapping);
nfs_direct_complete(dreq);
}
}
-static void nfs_alloc_commit_data(struct nfs_direct_req *dreq)
+static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
{
- dreq->commit_data = nfs_commitdata_alloc();
- if (dreq->commit_data != NULL)
- dreq->commit_data->dreq = dreq;
+ schedule_work(&dreq->work); /* Calls nfs_direct_write_schedule_work */
}
+
#else
-static inline void nfs_alloc_commit_data(struct nfs_direct_req *dreq)
-{
- dreq->commit_data = NULL;
-}
static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
{
- nfs_direct_free_writedata(dreq);
nfs_zap_mapping(inode, inode->i_mapping);
nfs_direct_complete(dreq);
}
#endif
-static void nfs_direct_write_result(struct rpc_task *task, void *calldata)
-{
- struct nfs_write_data *data = calldata;
-
- nfs_writeback_done(task, data);
-}
-
/*
* NB: Return the value of the first error return code. Subsequent
* errors after the first one are ignored.
*/
-static void nfs_direct_write_release(void *calldata)
-{
- struct nfs_write_data *data = calldata;
- struct nfs_pgio_header *hdr = data->header;
- struct nfs_direct_req *dreq = (struct nfs_direct_req *) hdr->req;
- int status = data->task.tk_status;
-
- spin_lock(&dreq->lock);
-
- if (unlikely(status < 0)) {
- /* An error has occurred, so we should not commit */
- dreq->flags = 0;
- dreq->error = status;
- }
- if (unlikely(dreq->error != 0))
- goto out_unlock;
-
- dreq->count += data->res.count;
-
- if (data->res.verf->committed != NFS_FILE_SYNC) {
- switch (dreq->flags) {
- case 0:
- memcpy(&dreq->verf, &data->verf, sizeof(dreq->verf));
- dreq->flags = NFS_ODIRECT_DO_COMMIT;
- break;
- case NFS_ODIRECT_DO_COMMIT:
- if (memcmp(&dreq->verf, &data->verf, sizeof(dreq->verf))) {
- dprintk("NFS: %5u write verify failed\n", data->task.tk_pid);
- dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
- }
- }
- }
-out_unlock:
- spin_unlock(&dreq->lock);
-
- if (put_dreq(dreq))
- nfs_direct_write_complete(dreq, hdr->inode);
-}
-
-static const struct rpc_call_ops nfs_write_direct_ops = {
- .rpc_call_prepare = nfs_write_prepare,
- .rpc_call_done = nfs_direct_write_result,
- .rpc_release = nfs_direct_write_release,
-};
-
/*
* For each wsize'd chunk of the user's buffer, dispatch an NFS WRITE
* operation. If nfs_writedata_alloc() or get_user_pages() fails,
* handled automatically by nfs_direct_write_result(). Otherwise, if
* no requests have been sent, just return an error.
*/
-static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
+static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *desc,
const struct iovec *iov,
- loff_t pos, int sync)
+ loff_t pos)
{
+ struct nfs_direct_req *dreq = desc->pg_dreq;
struct nfs_open_context *ctx = dreq->ctx;
struct inode *inode = ctx->dentry->d_inode;
unsigned long user_addr = (unsigned long)iov->iov_base;
size_t count = iov->iov_len;
- struct rpc_task *task;
- struct rpc_message msg = {
- .rpc_cred = ctx->cred,
- };
- struct rpc_task_setup task_setup_data = {
- .rpc_client = NFS_CLIENT(inode),
- .rpc_message = &msg,
- .callback_ops = &nfs_write_direct_ops,
- .workqueue = nfsiod_workqueue,
- .flags = RPC_TASK_ASYNC,
- };
size_t wsize = NFS_SERVER(inode)->wsize;
unsigned int pgbase;
int result;
ssize_t started = 0;
+ struct page **pagevec = NULL;
+ unsigned int npages;
do {
- struct nfs_write_header *whdr;
- struct nfs_write_data *data;
- struct nfs_page_array *pages;
size_t bytes;
+ int i;
pgbase = user_addr & ~PAGE_MASK;
- bytes = min(wsize,count);
+ bytes = min(max(wsize, PAGE_SIZE), count);
result = -ENOMEM;
- whdr = nfs_writehdr_alloc();
- if (unlikely(!whdr))
+ npages = nfs_page_array_len(pgbase, bytes);
+ if (!pagevec)
+ pagevec = kmalloc(npages * sizeof(struct page *), GFP_KERNEL);
+ if (!pagevec)
break;
- data = nfs_writedata_alloc(&whdr->header, nfs_page_array_len(pgbase, bytes));
- if (!data) {
- nfs_writehdr_free(&whdr->header);
- break;
- }
- data->header = &whdr->header;
- atomic_inc(&data->header->refcnt);
- pages = &data->pages;
-
down_read(¤t->mm->mmap_sem);
result = get_user_pages(current, current->mm, user_addr,
- pages->npages, 0, 0, pages->pagevec, NULL);
+ npages, 0, 0, pagevec, NULL);
up_read(¤t->mm->mmap_sem);
- if (result < 0) {
- nfs_direct_writehdr_release(whdr);
+ if (result < 0)
break;
- }
- if ((unsigned)result < pages->npages) {
+
+ if ((unsigned)result < npages) {
bytes = result * PAGE_SIZE;
if (bytes <= pgbase) {
- nfs_direct_release_pages(pages->pagevec, result);
- nfs_direct_writehdr_release(whdr);
+ nfs_direct_release_pages(pagevec, result);
break;
}
bytes -= pgbase;
- pages->npages = result;
+ npages = result;
}
- get_dreq(dreq);
-
- list_move_tail(&whdr->header.pages, &dreq->rewrite_list);
-
- whdr->header.req = (struct nfs_page *) dreq;
- whdr->header.inode = inode;
- whdr->header.cred = msg.rpc_cred;
- data->args.fh = NFS_FH(inode);
- data->args.context = ctx;
- data->args.lock_context = dreq->l_ctx;
- data->args.offset = pos;
- data->args.pgbase = pgbase;
- data->args.pages = pages->pagevec;
- data->args.count = bytes;
- data->args.stable = sync;
- data->res.fattr = &data->fattr;
- data->res.count = bytes;
- data->res.verf = &data->verf;
- nfs_fattr_init(&data->fattr);
-
- task_setup_data.task = &data->task;
- task_setup_data.callback_data = data;
- msg.rpc_argp = &data->args;
- msg.rpc_resp = &data->res;
- NFS_PROTO(inode)->write_setup(data, &msg);
-
- task = rpc_run_task(&task_setup_data);
- if (IS_ERR(task))
- break;
+ for (i = 0; i < npages; i++) {
+ struct nfs_page *req;
+ unsigned int req_len = min(bytes, PAGE_SIZE - pgbase);
- dprintk("NFS: %5u initiated direct write call "
- "(req %s/%Ld, %zu bytes @ offset %Lu)\n",
- task->tk_pid,
- inode->i_sb->s_id,
- (long long)NFS_FILEID(inode),
- bytes,
- (unsigned long long)data->args.offset);
- rpc_put_task(task);
-
- started += bytes;
- user_addr += bytes;
- pos += bytes;
-
- /* FIXME: Remove this useless math from the final patch */
- pgbase += bytes;
- pgbase &= ~PAGE_MASK;
- BUG_ON(pgbase != (user_addr & ~PAGE_MASK));
-
- count -= bytes;
+ req = nfs_create_request(dreq->ctx, dreq->inode,
+ pagevec[i],
+ pgbase, req_len);
+ if (IS_ERR(req)) {
+ nfs_direct_release_pages(pagevec + i,
+ npages - i);
+ result = PTR_ERR(req);
+ break;
+ }
+ nfs_lock_request(req);
+ req->wb_index = pos >> PAGE_SHIFT;
+ req->wb_offset = pos & ~PAGE_MASK;
+ if (!nfs_pageio_add_request(desc, req)) {
+ result = desc->pg_error;
+ nfs_unlock_request(req);
+ nfs_release_request(req);
+ nfs_direct_release_pages(pagevec + i,
+ npages - i);
+ }
+ pgbase = 0;
+ bytes -= req_len;
+ started += req_len;
+ user_addr += req_len;
+ pos += req_len;
+ count -= req_len;
+ }
} while (count != 0);
+ kfree(pagevec);
+
if (started)
return started;
return result < 0 ? (ssize_t) result : -EFAULT;
}
+static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
+{
+ struct nfs_direct_req *dreq = hdr->dreq;
+ struct nfs_commit_info cinfo;
+ int bit = -1;
+ struct nfs_page *req = nfs_list_entry(hdr->pages.next);
+
+ if (test_bit(NFS_IOHDR_REDO, &hdr->flags))
+ goto out_put;
+
+ nfs_init_cinfo_from_dreq(&cinfo, dreq);
+
+ spin_lock(&dreq->lock);
+
+ if (test_bit(NFS_IOHDR_ERROR, &hdr->flags)) {
+ dreq->flags = 0;
+ dreq->error = hdr->error;
+ }
+ if (dreq->error != 0)
+ bit = NFS_IOHDR_ERROR;
+ else {
+ dreq->count += hdr->good_bytes;
+ if (test_bit(NFS_IOHDR_NEED_RESCHED, &hdr->flags)) {
+ dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
+ bit = NFS_IOHDR_NEED_RESCHED;
+ } else if (test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags)) {
+ if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES)
+ bit = NFS_IOHDR_NEED_RESCHED;
+ else if (dreq->flags == 0) {
+ memcpy(&dreq->verf, &req->wb_verf,
+ sizeof(dreq->verf));
+ bit = NFS_IOHDR_NEED_COMMIT;
+ dreq->flags = NFS_ODIRECT_DO_COMMIT;
+ } else if (dreq->flags == NFS_ODIRECT_DO_COMMIT) {
+ if (memcmp(&dreq->verf, &req->wb_verf, sizeof(dreq->verf))) {
+ dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
+ bit = NFS_IOHDR_NEED_RESCHED;
+ } else
+ bit = NFS_IOHDR_NEED_COMMIT;
+ }
+ }
+ }
+ spin_unlock(&dreq->lock);
+
+ while (!list_empty(&hdr->pages)) {
+ req = nfs_list_entry(hdr->pages.next);
+ nfs_list_remove_request(req);
+ switch (bit) {
+ case NFS_IOHDR_NEED_RESCHED:
+ case NFS_IOHDR_NEED_COMMIT:
+ nfs_mark_request_commit(req, hdr->lseg, &cinfo);
+ break;
+ default:
+ page_cache_release(req->wb_page);
+ nfs_release_request(req);
+ }
+ nfs_unlock_request(req);
+ }
+
+out_put:
+ if (put_dreq(dreq))
+ nfs_direct_write_complete(dreq, hdr->inode);
+ hdr->release(hdr);
+}
+
+static const struct nfs_pgio_completion_ops nfs_direct_write_completion_ops = {
+ .error_cleanup = nfs_sync_pgio_error,
+ .init_hdr = nfs_direct_pgio_init,
+ .completion = nfs_direct_write_completion,
+};
+
static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
const struct iovec *iov,
unsigned long nr_segs,
- loff_t pos, int sync)
+ loff_t pos)
{
+ struct nfs_pageio_descriptor desc;
ssize_t result = 0;
size_t requested_bytes = 0;
unsigned long seg;
+ nfs_pageio_init_write(&desc, dreq->inode, FLUSH_COND_STABLE,
+ &nfs_direct_write_completion_ops);
+ desc.pg_dreq = dreq;
get_dreq(dreq);
for (seg = 0; seg < nr_segs; seg++) {
const struct iovec *vec = &iov[seg];
- result = nfs_direct_write_schedule_segment(dreq, vec,
- pos, sync);
+ result = nfs_direct_write_schedule_segment(&desc, vec, pos);
if (result < 0)
break;
requested_bytes += result;
break;
pos += vec->iov_len;
}
+ nfs_pageio_complete(&desc);
/*
* If no bytes were started, return the error, and let the
ssize_t result = -ENOMEM;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct nfs_direct_req *dreq;
- size_t wsize = NFS_SERVER(inode)->wsize;
- int sync = NFS_UNSTABLE;
dreq = nfs_direct_req_alloc();
if (!dreq)
goto out;
- nfs_alloc_commit_data(dreq);
-
- if (dreq->commit_data == NULL || count <= wsize)
- sync = NFS_FILE_SYNC;
dreq->inode = inode;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
if (!is_sync_kiocb(iocb))
dreq->iocb = iocb;
- result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos, sync);
+ result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos);
if (!result)
result = nfs_direct_wait(dreq);
out_release:
task_io_account_write(count);
retval = nfs_direct_write(iocb, iov, nr_segs, pos, count);
+ if (retval > 0) {
+ struct inode *inode = mapping->host;
- if (retval > 0)
iocb->ki_pos = pos + retval;
-
+ spin_lock(&inode->i_lock);
+ if (i_size_read(inode) < iocb->ki_pos)
+ i_size_write(inode, iocb->ki_pos);
+ spin_unlock(&inode->i_lock);
+ }
out:
return retval;
}
projects / linux-beck.git / commitdiff