diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2013-10-18 09:44:49 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-29 10:50:36 -0800 |
| commit | 801327994060b0ae3749257d264a7bfea119b46c (patch) | |
| tree | f06d24743c51b4aa314d44c452ccc6642298ce74 | |
| parent | 82b80fae0eb0c2d18414f7e678e04a4e7f88ecbe (diff) | |
block: properly stack underlying max_segment_size to DM device
commit d82ae52e68892338068e7559a0c0657193341ce4 upstream.
Without this patch all DM devices will default to BLK_MAX_SEGMENT_SIZE
(65536) even if the underlying device(s) have a larger value -- this is
due to blk_stack_limits() using min_not_zero() when stacking the
max_segment_size limit.
1073741824
before patch:
65536
after patch:
1073741824
Reported-by: Lukasz Flis <l.flis@cyfronet.pl>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | block/blk-settings.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index d3234fc494ad..b74cc58bc038 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -143,6 +143,7 @@ void blk_set_stacking_limits(struct queue_limits *lim) lim->discard_zeroes_data = 1; lim->max_segments = USHRT_MAX; lim->max_hw_sectors = UINT_MAX; + lim->max_segment_size = UINT_MAX; lim->max_sectors = BLK_DEF_MAX_SECTORS; } |