| commit | 651385e4bbbff823f111e4e8a68b2e1613c34c79 | |
| author | Mikulas Patocka <mpatocka@redhat.com> | |
| Fri, 16 Oct 2009 22:18:16 +0000 (16 23:18 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Tue, 10 Nov 2009 00:22:06 +0000 (9 16:22 -0800) | ||
| tree | fb4b3ed8702f2a78754c4f58e6174e9f6f13eb38 | treesnapshot (tar.gz zip) |
| parent | e61f48eb0ac00c6d73dd53b3d79abe2c578328dc | commitdiff |
dm snapshot: lock snapshot while supplying status
commit 4c6fff445d7aa753957856278d4d93bcad6e2c14 upstream.
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.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 4c6fff445d7aa753957856278d4d93bcad6e2c14 upstream.
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.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/md/dm-snap.c | diffblobblamehistory |