tree 49262a88fc42b85bfe4930f5cd7a832d5ba647c6
parent cbedaac63481dea52327127a9f1c60f092bd6b07
author Dave Chinner <dchinner@redhat.com> 1425490642 -0500
committer Josef Bacik <jbacik@fb.com> 1439851186 -0400

inode: convert inode_sb_list_lock to per-sb

The process of reducing contention on per-superblock inode lists
starts with moving the locking to match the per-superblock inode
list. This takes the global lock out of the picture and reduces the
contention problems to within a single filesystem. This doesn't get
rid of contention as the locks still have global CPU scope, but it
does isolate operations on different superblocks form each other.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Dave Chinner <dchinner@redhat.com>