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author | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2013-03-20 13:49:48 +0000 |
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committer | Chris Mason <chris.mason@fusionio.com> | 2013-03-21 19:31:52 -0400 |
commit | d9abbf1c3131b679379762700201ae69367f3f62 (patch) | |
tree | adaea6d6a6ba572bb0ac77bdba0d8961b6f888ba /fs/btrfs/disk-io.c | |
parent | 6113077cd319e747875ec71227d2b5cb54e08c76 (diff) | |
download | op-kernel-dev-d9abbf1c3131b679379762700201ae69367f3f62.zip op-kernel-dev-d9abbf1c3131b679379762700201ae69367f3f62.tar.gz |
Btrfs: fix locking on ROOT_REPLACE operations in tree mod log
To resolve backrefs, ROOT_REPLACE operations in the tree mod log are
required to be tied to at least one KEY_REMOVE_WHILE_FREEING operation.
Therefore, those operations must be enclosed by tree_mod_log_write_lock()
and tree_mod_log_write_unlock() calls.
Those calls are private to the tree_mod_log_* functions, which means that
removal of the elements of an old root node must be logged from
tree_mod_log_insert_root. This partly reverts and corrects commit ba1bfbd5
(Btrfs: fix a tree mod logging issue for root replacement operations).
This fixes the brand-new version of xfstest 276 as of commit cfe73f71.
Cc: stable@vger.kernel.org
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
0 files changed, 0 insertions, 0 deletions