adfs: remove the big kernel lock

According to Russell King, adfs was written to not require the big
kernel lock, and all inode updates are done under adfs_dir_lock.

All other metadata in adfs is read-only and does not require locking.
The use of the BKL is the result of various pushdowns from the VFS
operations.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Stuart Swales <stuart.swales.croftnuisk@gmail.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 3b4a764ed780..3d83075aaa2e 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -9,7 +9,6 @@
  *
  *  Common directory handling for ADFS
  */
-#include <linux/smp_lock.h>
 #include "adfs.h"
 
 /*
@@ -27,8 +26,6 @@ adfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
         struct adfs_dir dir;
         int ret = 0;
 
-        lock_kernel();  
-
         if (filp->f_pos >> 32)
                 goto out;
 
@@ -70,7 +67,6 @@ free_out:
         ops->free(&dir);
 
 out:
-        unlock_kernel();
         return ret;
 }
 
@@ -276,7 +272,6 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
         struct object_info obj;
         int error;
 
-        lock_kernel();
         error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
         if (error == 0) {
                 error = -EACCES;
@@ -288,7 +283,6 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
                 if (inode)
                         error = 0;
         }
-        unlock_kernel();
         d_add(dentry, inode);
         return ERR_PTR(error);
 }