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/inode.c b/fs/adfs/inode.c
index 65794b8fe79e..09fe40198d1c 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -7,7 +7,6 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
 #include <linux/writeback.h>
 #include "adfs.h"
@@ -316,8 +315,6 @@ adfs_notify_change(struct dentry *dentry, struct iattr *attr)
         unsigned int ia_valid = attr->ia_valid;
         int error;
         
-        lock_kernel();
-
         error = inode_change_ok(inode, attr);
 
         /*
@@ -359,7 +356,6 @@ adfs_notify_change(struct dentry *dentry, struct iattr *attr)
         if (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MODE))
                 mark_inode_dirty(inode);
 out:
-        unlock_kernel();
         return error;
 }
 
@@ -374,7 +370,6 @@ int adfs_write_inode(struct inode *inode, struct writeback_control *wbc)
         struct object_info obj;
         int ret;
 
-        lock_kernel();
         obj.file_id     = inode->i_ino;
         obj.name_len    = 0;
         obj.parent_id   = ADFS_I(inode)->parent_id;
@@ -384,6 +379,5 @@ int adfs_write_inode(struct inode *inode, struct writeback_control *wbc)
         obj.size        = inode->i_size;
 
         ret = adfs_dir_update(sb, &obj, wbc->sync_mode == WB_SYNC_ALL);
-        unlock_kernel();
         return ret;
 }