diff options
| author | Dave Chinner <dchinner@redhat.com> | 2011-03-22 22:23:41 +1100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-24 21:17:51 -0400 |
| commit | a66979abad090b2765a6c6790c9fdeab996833f2 (patch) | |
| tree | e48b2d0fac8f96456286a503aeeb952620234961 /fs/block_dev.c | |
| parent | 55fa6091d83160ca772fc37cebae45d42695a708 (diff) | |
| download | lwn-a66979abad090b2765a6c6790c9fdeab996833f2.tar.gz lwn-a66979abad090b2765a6c6790c9fdeab996833f2.zip | |
fs: move i_wb_list out from under inode_lock
Protect the inode writeback list with a new global lock
inode_wb_list_lock and use it to protect the list manipulations and
traversals. This lock replaces the inode_lock as the inodes on the
list can be validity checked while holding the inode->i_lock and
hence the inode_lock is no longer needed to protect the list.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index bc39b18cf3d0..2bbc0e62102f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -55,13 +55,13 @@ EXPORT_SYMBOL(I_BDEV); static void bdev_inode_switch_bdi(struct inode *inode, struct backing_dev_info *dst) { - spin_lock(&inode_lock); + spin_lock(&inode_wb_list_lock); spin_lock(&inode->i_lock); inode->i_data.backing_dev_info = dst; if (inode->i_state & I_DIRTY) list_move(&inode->i_wb_list, &dst->wb.b_dirty); spin_unlock(&inode->i_lock); - spin_unlock(&inode_lock); + spin_unlock(&inode_wb_list_lock); } static sector_t max_block(struct block_device *bdev) |