vfs: make inode_sb_list_lock per sb
When doing fs_mark tests I was noticing other things getting starved out of
doing operations while the fs was unmounting. This is because we protect all
super_block's s_inodes list with a global lock, which is kind of a bummer.
There doesn't seem to be any reason we do this so make it a per-sb lock. This
makes sure that we don't add latency to anybody trying to add/remove inodes from
the per sb list while somebody else is unmounting or evicting inodes. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
10 files changed
