Searched hist:"1 dded9acf6dc9a34cd27fcf8815507e4e65b3c4f" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/block/ |
| H A D | loop.c | diff 1dded9acf6dc9a34cd27fcf8815507e4e65b3c4f Thu Nov 08 07:01:15 CST 2018 Jan Kara <jack@suse.cz> loop: Avoid circular locking dependency between loop_ctl_mutex and bd_mutex
Code in loop_change_fd() drops reference to the old file (and also the
new file in a failure case) under loop_ctl_mutex. Similarly to a
situation in loop_set_fd() this can create a circular locking dependency
if this was the last reference holding the file open. Delay dropping of
the file reference until we have released loop_ctl_mutex.
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|