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authorMikulas Patocka <mpatocka@redhat.com>2009-06-22 05:12:23 -0400
committerAlasdair G Kergon <agk@redhat.com>2009-06-22 05:12:23 -0400
commit647c7db14ef9cacc4ccb3683e206b61f0de6dc2b (patch)
tree4ef2475e295813dcce1123f2c74ba04061db1b7e
parent374bf7e7f6cc38b0483351a2029a97910eadde1b (diff)
dm crypt: support flush
Flush support for dm-crypt target. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
-rw-r--r--drivers/md/dm-crypt.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 53394e863c74..04db6c4004a8 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1132,6 +1132,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
1132 goto bad_crypt_queue; 1132 goto bad_crypt_queue;
1133 } 1133 }
1134 1134
1135 ti->num_flush_requests = 1;
1135 ti->private = cc; 1136 ti->private = cc;
1136 return 0; 1137 return 0;
1137 1138
@@ -1189,6 +1190,13 @@ static int crypt_map(struct dm_target *ti, struct bio *bio,
1189 union map_info *map_context) 1190 union map_info *map_context)
1190{ 1191{
1191 struct dm_crypt_io *io; 1192 struct dm_crypt_io *io;
1193 struct crypt_config *cc;
1194
1195 if (unlikely(bio_empty_barrier(bio))) {
1196 cc = ti->private;
1197 bio->bi_bdev = cc->dev->bdev;
1198 return DM_MAPIO_REMAPPED;
1199 }
1192 1200
1193 io = crypt_io_alloc(ti, bio, bio->bi_sector - ti->begin); 1201 io = crypt_io_alloc(ti, bio, bio->bi_sector - ti->begin);
1194 1202