4.2.8-ckt9 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------ From: Ahmed Samy <[email protected]> commit 6545b60baaf880b0cd29a5e89dbe745a06027e89 upstream. Commit 9567366fefdd ("dm cache metadata: fix READ_LOCK macros and cleanup WRITE_LOCK macros") uses down_write() instead of down_read() in cmd_read_lock(), yet up_read() is used to release the lock in READ_UNLOCK(). Fix it. Fixes: 9567366fefdd ("dm cache metadata: fix READ_LOCK macros and cleanup WRITE_LOCK macros") Signed-off-by: Ahmed Samy <[email protected]> Signed-off-by: Mike Snitzer <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- drivers/md/dm-cache-metadata.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c index 141b9bc..d00d5bb 100644 --- a/drivers/md/dm-cache-metadata.c +++ b/drivers/md/dm-cache-metadata.c @@ -890,9 +890,9 @@ static bool cmd_write_lock(struct dm_cache_metadata *cmd) static bool cmd_read_lock(struct dm_cache_metadata *cmd) { - down_write(&cmd->root_lock); + down_read(&cmd->root_lock); if (cmd->fail_io) { - up_write(&cmd->root_lock); + up_read(&cmd->root_lock); return false; } return true; -- 2.7.4
