NFS: Ensure we zap only the access and acl caches when setting new acls

commit f41f741838480aeaa3a189cff6e210503cf9c42d upstream

...and ensure that we obey the NFS_INO_INVALID_ACL flag when retrieving the
acls.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 596c5d8e86f4783f78699ae685911958699162d5..1d7ac64aafee6a195e3541f04fc5bb233b99ac32 100644 (file)
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -57,8 +57,6 @@ static int enable_ino64 = NFS_64_BIT_INODE_NUMBERS_ENABLED;
 static void nfs_invalidate_inode(struct inode *);
 static int nfs_update_inode(struct inode *, struct nfs_fattr *);
 
-static void nfs_zap_acl_cache(struct inode *);
-
 static struct kmem_cache * nfs_inode_cachep;
 
 static inline unsigned long
@@ -167,7 +165,7 @@ void nfs_zap_mapping(struct inode *inode, struct address_space *mapping)
        }
 }
 
-static void nfs_zap_acl_cache(struct inode *inode)
+void nfs_zap_acl_cache(struct inode *inode)
 {
        void (*clear_acl_cache)(struct inode *);
 

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 04ae867dddba43a8267cb09771f07f057fa7ab59..24241fcbb98d7647fb6b07fcda9a9e0aee10139a 100644 (file)
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -150,6 +150,7 @@ extern void nfs_clear_inode(struct inode *);
 #ifdef CONFIG_NFS_V4
 extern void nfs4_clear_inode(struct inode *);
 #endif
+void nfs_zap_acl_cache(struct inode *inode);
 
 /* super.c */
 extern struct file_system_type nfs_xdev_fs_type;

diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index 9b7362565c0c3b9b8c5dc1610a2c354305ae4999..423842f51ac91b6c447ce708dd31a2ab6cc513f1 100644 (file)
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -5,6 +5,8 @@
 #include <linux/posix_acl_xattr.h>
 #include <linux/nfsacl.h>
 
+#include "internal.h"
+
 #define NFSDBG_FACILITY        NFSDBG_PROC
 
 ssize_t nfs3_listxattr(struct dentry *dentry, char *buffer, size_t size)
@@ -205,6 +207,8 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
        status = nfs_revalidate_inode(server, inode);
        if (status < 0)
                return ERR_PTR(status);
+       if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
+               nfs_zap_acl_cache(inode);
        acl = nfs3_get_cached_acl(inode, type);
        if (acl != ERR_PTR(-EAGAIN))
                return acl;
@@ -319,9 +323,8 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
        dprintk("NFS call setacl\n");
        msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL];
        status = rpc_call_sync(server->client_acl, &msg, 0);
-       spin_lock(&inode->i_lock);
-       NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS;
-       spin_unlock(&inode->i_lock);
+       nfs_access_zap_cache(inode);
+       nfs_zap_acl_cache(inode);
        dprintk("NFS reply setacl: %d\n", status);
 
        /* pages may have been allocated at the xdr layer. */

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 1293e0acd82b7ab80604a9077277f0f4f97c333d..806d17fac94427b4c9caf1529046fb317c74589c 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2706,6 +2706,8 @@ static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
        ret = nfs_revalidate_inode(server, inode);
        if (ret < 0)
                return ret;
+       if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
+               nfs_zap_acl_cache(inode);
        ret = nfs4_read_cached_acl(inode, buf, buflen);
        if (ret != -ENOENT)
                return ret;
@@ -2733,7 +2735,8 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
        nfs_inode_return_delegation(inode);
        buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
        ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
-       nfs_zap_caches(inode);
+       nfs_access_zap_cache(inode);
+       nfs_zap_acl_cache(inode);
        return ret;
 }