| commit | 3c9c708c9fc967e389f85bc735e4c1f65d67334e | |
| author | Eric Dumazet <edumazet@google.com> | |
| Thu, 31 May 2012 11:39:05 +0000 (31 13:39 +0200) | ||
| committer | Jens Axboe <axboe@kernel.dk> | |
| Thu, 31 May 2012 11:39:05 +0000 (31 13:39 +0200) | ||
| tree | 946eeefd4599bb1adafd87ad8f46d52382935001 | treesnapshot (tar.gz zip) |
| parent | b77874c9699522540e65aa4291e37a7e43533bf3 | commitdiff |
block: avoid infinite loop in get_task_io_context()
Calling get_task_io_context() on a exiting task which isn't %current can
loop forever. This triggers at boot time on my dev machine.
BUG: soft lockup - CPU#3 stuck for 22s ! [mountall.1603]
Fix this by making create_task_io_context() returns -EBUSY in this case
to break the loop.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Calling get_task_io_context() on a exiting task which isn't %current can
loop forever. This triggers at boot time on my dev machine.
BUG: soft lockup - CPU#3 stuck for 22s ! [mountall.1603]
Fix this by making create_task_io_context() returns -EBUSY in this case
to break the loop.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| block/blk-ioc.c | diffblobblamehistory |