NFS: Remove BKL usage from open()
All the NFSv4 stateful operations are already protected by other locks (in
particular by the rpc_sequence locks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 73e0f97..c68ec44 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -139,10 +139,8 @@
nfs_inc_stats(inode, NFSIOS_VFSOPEN);
- lock_kernel();
/* Call generic open code in order to cache credentials */
res = nfs_open(inode, filp);
- unlock_kernel();
return res;
}
@@ -1019,9 +1017,7 @@
}
/* Open the file on the server */
- lock_kernel();
res = nfs4_atomic_open(dir, dentry, nd);
- unlock_kernel();
if (IS_ERR(res)) {
error = PTR_ERR(res);
switch (error) {
@@ -1083,9 +1079,7 @@
* operations that change the directory. We therefore save the
* change attribute *before* we do the RPC call.
*/
- lock_kernel();
ret = nfs4_open_revalidate(dir, dentry, openflags, nd);
- unlock_kernel();
out:
dput(parent);
if (!ret)
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index f919d9a..9f1bed9 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -128,9 +128,7 @@
return res;
nfs_inc_stats(inode, NFSIOS_VFSOPEN);
- lock_kernel();
res = nfs_open(inode, filp);
- unlock_kernel();
return res;
}
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 4451287..c910413 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -451,9 +451,7 @@
/* Save the delegation */
memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
rcu_read_unlock();
- lock_kernel();
ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
- unlock_kernel();
if (ret != 0)
goto out;
ret = -EAGAIN;