NFS: Improve tracing of permission calls
On exit from nfs_do_access(), record the mask representing the requested
permissions, as well as the server-supplied set of access rights for
this user.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index e180033..372c16b 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2476,7 +2476,7 @@ static int nfs_do_access(struct inode *inode, const struct cred *cred, int mask)
{
struct nfs_access_entry cache;
bool may_block = (mask & MAY_NOT_BLOCK) == 0;
- int cache_mask;
+ int cache_mask = -1;
int status;
trace_nfs_access_enter(inode);
@@ -2515,7 +2515,7 @@ static int nfs_do_access(struct inode *inode, const struct cred *cred, int mask)
if ((mask & ~cache_mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) != 0)
status = -EACCES;
out:
- trace_nfs_access_exit(inode, status);
+ trace_nfs_access_exit(inode, mask, cache_mask, status);
return status;
}