dm snapshot: permit only one merge at once
authorMikulas Patocka <mpatocka@redhat.com>
Thu, 10 Dec 2009 23:52:32 +0000 (23:52 +0000)
committerAlasdair G Kergon <agk@redhat.com>
Thu, 10 Dec 2009 23:52:32 +0000 (23:52 +0000)
commit9d3b15c4c776b041f9ee81810cbd375275411829
tree8298b50b4d9cf11355e622e6b7c314628e5c6256
parent10b8106a70433e14153469ebbdd189776500e238
dm snapshot: permit only one merge at once

Merging more than one snapshot is not supported, so prevent
this happening.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
drivers/md/dm-snap.c