ext3: Replace lock/unlock_super() with an explicit lock for resizing
authorEric Sandeen <sandeen@redhat.com>
Mon, 14 Dec 2009 19:01:05 +0000 (13:01 -0600)
committerJan Kara <jack@suse.cz>
Wed, 23 Dec 2009 12:44:12 +0000 (13:44 +0100)
commit96d2a495c25d525873529b736cdb63ad502b101c
tree7ceb418c1e26e682cc0c43d47efe4eb2cc639de9
parentb8a052d01669977f224255b0f9f2737018171ddb
ext3: Replace lock/unlock_super() with an explicit lock for resizing

Use a separate lock to protect s_groups_count and the other block
group descriptors which get changed via an on-line resize operation,
so we can stop overloading the use of lock_super().

Port of ext4 commit 32ed5058ce90024efcd811254b4b1de0468099df by
Theodore Ts'o <tytso@mit.edu>.

CC: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
fs/ext3/resize.c
fs/ext3/super.c
include/linux/ext3_fs_sb.h