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Subject[patch 12/25] NFS: Ensure we zap only the access and acl caches when setting new acls
2.6.26-stable review patch.  If anyone has any objections, please let us
know.

------------------
From: Trond Myklebust <Trond.Myklebust@netapp.com>

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>

---
fs/nfs/inode.c | 4 +---
fs/nfs/internal.h | 1 +
fs/nfs/nfs3acl.c | 9 ++++++---
fs/nfs/nfs4proc.c | 5 ++++-
4 files changed, 12 insertions(+), 7 deletions(-)
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -57,8 +57,6 @@ static int enable_ino64 = NFS_64_BIT_INO
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
}
}

-static void nfs_zap_acl_cache(struct inode *inode)
+void nfs_zap_acl_cache(struct inode *inode)
{
void (*clear_acl_cache)(struct inode *);

--- 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;
--- 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(struc
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 inod
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. */
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2706,6 +2706,8 @@ static ssize_t nfs4_proc_get_acl(struct
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 in
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;
}

--


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