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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-10-17 02:18:16 +0400 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-10-17 02:18:16 +0400 |
| commit | 4c6fff445d7aa753957856278d4d93bcad6e2c14 (patch) | |
| tree | 56ac3d262699fe5a42f76fe9f992277a6a7a2934 /drivers/md/dm-exception-store.c | |
| parent | 0e8c4e4e3ebb15756ddc4170a88149a2cd323cfe (diff) | |
| download | linux-4c6fff445d7aa753957856278d4d93bcad6e2c14.tar.xz | |
dm snapshot: lock snapshot while supplying status
This patch locks the snapshot when returning status. It fixes a race
when it could return an invalid number of free chunks if someone
was simultaneously modifying 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-exception-store.c')
0 files changed, 0 insertions, 0 deletions