BKL: Remove BKL from CifsFS

The BKL is only used in put_super and fill_super that are both protected by
the superblocks s_umount rw_semaphore. Therefore it is safe to remove the
BKL entirely.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Cc: Steve French <smfrench@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 1 insertions, 12 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 070bf1aecd2d..4e273f7793f6 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -35,7 +35,6 @@
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/freezer.h>
-#include <linux/smp_lock.h>
 #include "cifsfs.h"
 #include "cifspdu.h"
 #define DECLARE_GLOBALS_HERE
@@ -200,8 +199,6 @@ cifs_put_super(struct super_block *sb)
                 return;
         }
 
-        lock_kernel();
-
         rc = cifs_umount(sb, cifs_sb);
         if (rc)
                 cERROR(1, "cifs_umount failed with return code %d", rc);
@@ -215,8 +212,6 @@ cifs_put_super(struct super_block *sb)
         unload_nls(cifs_sb->local_nls);
         bdi_destroy(&cifs_sb->bdi);
         kfree(cifs_sb);
-
-        unlock_kernel();
 }
 
 static int
@@ -516,28 +511,22 @@ cifs_get_sb(struct file_system_type *fs_type,
         int rc;
         struct super_block *sb;
 
-        lock_kernel();
-
         sb = sget(fs_type, NULL, set_anon_super, NULL);
 
         cFYI(1, "Devname: %s flags: %d ", dev_name, flags);
 
-        if (IS_ERR(sb)) {
-                unlock_kernel();
+        if (IS_ERR(sb))
                 return PTR_ERR(sb);
-        }
 
         sb->s_flags = flags;
 
         rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0);
         if (rc) {
                 deactivate_locked_super(sb);
-                unlock_kernel();
                 return rc;
         }
         sb->s_flags |= MS_ACTIVE;
         simple_set_mnt(mnt, sb);
-        unlock_kernel();
         return 0;
 }