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| author | Mike Snitzer <snitzer@redhat.com> | 2013-10-18 09:44:49 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-29 11:11:51 -0800 |
| commit | 0deb6f9cb87494f6646fb014f09b41d3ded76c63 (patch) | |
| tree | 59fdafc3554f3f237a3320cfb624341b22117eca /block | |
| parent | 12e6e9c2a578d3a2f0474d48d845f796361a90c0 (diff) | |
| download | linux-3.10-0deb6f9cb87494f6646fb014f09b41d3ded76c63.tar.gz linux-3.10-0deb6f9cb87494f6646fb014f09b41d3ded76c63.tar.bz2 linux-3.10-0deb6f9cb87494f6646fb014f09b41d3ded76c63.zip | |
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>
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 c50ecf0ea3b..53309333c2f 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; } |