GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

adfs: remove the big kernel lock

Browse source 
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>
This commit is contained in:
Arnd Bergmann 2011-01-22 20:05:05 +01:00
parent f5412be599
commit 4688a066ec
4 changed files with 1 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

6
fs/adfs/inode.c
View file

@ -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;
}