diff options
| author | Jens Axboe <jaxboe@fusionio.com> | 2010-10-19 09:13:04 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-10-19 09:13:04 +0200 |
| commit | fa251f89903d73989e2f63e13d0eaed1e07ce0da (patch) | |
| tree | 3f7fe779941e3b6d67754dd7c44a32f48ea47c74 /block/blk-merge.c | |
| parent | dd3932eddf428571762596e17b65f5dc92ca361b (diff) | |
| parent | cd07202cc8262e1669edff0d97715f3dd9260917 (diff) | |
| download | linux-fa251f89903d73989e2f63e13d0eaed1e07ce0da.tar.bz2 | |
Merge branch 'v2.6.36-rc8' into for-2.6.37/barrier
Conflicts:
block/blk-core.c
drivers/block/loop.c
mm/swapfile.c
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 3b0cd4249671..eafc94f68d79 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -362,6 +362,18 @@ static int attempt_merge(struct request_queue *q, struct request *req, return 0; /* + * Don't merge file system requests and discard requests + */ + if ((req->cmd_flags & REQ_DISCARD) != (next->cmd_flags & REQ_DISCARD)) + return 0; + + /* + * Don't merge discard requests and secure discard requests + */ + if ((req->cmd_flags & REQ_SECURE) != (next->cmd_flags & REQ_SECURE)) + return 0; + + /* * not contiguous */ if (blk_rq_pos(req) + blk_rq_sectors(req) != blk_rq_pos(next)) |