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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-12-11 00:51:53 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-12-11 00:51:53 +0100 |
| commit | 94e76572b5dd37b1f0f4b3742ee8a565daead932 (patch) | |
| tree | 2e7737f21d99a881b7a2d0977adad1d2bd9bfb87 /drivers/md/dm-crypt.c | |
| parent | dm: sysfs add empty release function to avoid debug warning (diff) | |
| download | linux-94e76572b5dd37b1f0f4b3742ee8a565daead932.tar.xz linux-94e76572b5dd37b1f0f4b3742ee8a565daead932.zip | |
dm snapshot: only take lock for statustype info not table
Take snapshot lock only for STATUSTYPE_INFO, not STATUSTYPE_TABLE.
Commit 4c6fff445d7aa753957856278d4d93bcad6e2c14
(dm-snapshot-lock-snapshot-while-supplying-status.patch)
introduced this use of the lock, but userspace applications using
libdevmapper have been found to request STATUSTYPE_TABLE while the device
is suspended and the lock is already held, leading to deadlock. Since
the lock is not necessary in this case, don't try to take it.
Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-crypt.c')
0 files changed, 0 insertions, 0 deletions