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| author | Hannes Reinecke <hare@suse.de> | 2011-09-28 08:07:01 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-03 11:41:13 -0700 |
| commit | c2b387f0295ffaeb5e96f0d6f745fde507abd651 (patch) | |
| tree | 9d817f12f4ecfa480ac1cc3b471af31837b30c8c /block/elevator.c | |
| parent | f0e47138b26bd26d312aa63522a579acac5552c6 (diff) | |
| download | kernel_samsung_smdk4412-c2b387f0295ffaeb5e96f0d6f745fde507abd651.zip kernel_samsung_smdk4412-c2b387f0295ffaeb5e96f0d6f745fde507abd651.tar.gz kernel_samsung_smdk4412-c2b387f0295ffaeb5e96f0d6f745fde507abd651.tar.bz2 | |
block: Free queue resources at blk_release_queue()
commit 777eb1bf15b8532c396821774bf6451e563438f5 upstream.
A kernel crash is observed when a mounted ext3/ext4 filesystem is
physically removed. The problem is that blk_cleanup_queue() frees up
some resources eg by calling elevator_exit(), which are not checked for
in normal operation. So we should rather move these calls to the
destructor function blk_release_queue() as at that point all remaining
references are gone. However, in doing so we have to ensure that any
externally supplied queue_lock is disconnected as the driver might free
up the lock after the call of blk_cleanup_queue(),
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'block/elevator.c')
0 files changed, 0 insertions, 0 deletions