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| author | Mike Snitzer <snitzer@redhat.com> | 2013-10-18 09:44:49 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-11-08 09:00:17 -0700 |
| commit | d82ae52e68892338068e7559a0c0657193341ce4 (patch) | |
| tree | aab870f6e8b0dfdddade4b0f2e738b37e388c94c /block | |
| parent | 7c8a3679e3d8e9d92d58f282161760a0e247df97 (diff) | |
| download | linux-d82ae52e68892338068e7559a0c0657193341ce4.tar.gz linux-d82ae52e68892338068e7559a0c0657193341ce4.tar.bz2 linux-d82ae52e68892338068e7559a0c0657193341ce4.zip | |
block: properly stack underlying max_segment_size to DM device
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>
Cc: stable@vger.kernel.org # v3.3+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -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 c50ecf0ea3b1..53309333c2f0 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -144,6 +144,7 @@ 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 = UINT_MAX; lim->max_write_same_sectors = UINT_MAX; } |