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author | NeilBrown <neilb@suse.de> | 2011-02-21 10:25:57 +0300 |
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committer | NeilBrown <neilb@suse.de> | 2011-02-21 10:25:57 +0300 |
commit | da9cf5050a2e3dbc3cf26a8d908482eb4485ed49 (patch) | |
tree | d5e7ea4ef419d07d294e88b47a4aaf2676a605eb /fs/inode.c | |
parent | 8f5f02c460b7ca74ce55ce126ce0c1e58a3f923d (diff) | |
download | linux-da9cf5050a2e3dbc3cf26a8d908482eb4485ed49.tar.xz |
md: avoid spinlock problem in blk_throtl_exit
blk_throtl_exit assumes that ->queue_lock still exists,
so make sure that it does.
To do this, we stop redirecting ->queue_lock to conf->device_lock
and leave it pointing where it is initialised - __queue_lock.
As the blk_plug functions check the ->queue_lock is held, we now
take that spin_lock explicitly around the plug functions. We don't
need the locking, just the warning removal.
This is needed for any kernel with the blk_throtl code, which is
which is 2.6.37 and later.
Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'fs/inode.c')
0 files changed, 0 insertions, 0 deletions