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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-12-04 08:56:35 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-12-29 08:29:51 +0100
commit18af8b2ca34b831c32c6fa01e7ce33143c33bb63 (patch)
tree0feb71c891dea467c88181b1974d15cf58243f9a /block/blk-settings.c
parenta6f23657d3072bde6844055bbc2290e497f33fbc (diff)
downloadlinux-2.6.34-ux500-18af8b2ca34b831c32c6fa01e7ce33143c33bb63.tar.gz
block: use min_not_zero in blk_queue_stack_limits
zero is invalid for max_phys_segments, max_hw_segments, and max_segment_size. It's better to use use min_not_zero instead of min. min() works though (because the commit 0e435ac makes sure that these values are set to the default values, non zero, if a queue is initialized properly). With this patch, blk_queue_stack_limits does the almost same thing that dm's combine_restrictions_low() does. I think that it's easy to remove dm's combine_restrictions_low. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-settings.c')
-rw-r--r--block/blk-settings.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index afa55e14e27..59fd05d9f1d 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -319,9 +319,9 @@ void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b)
t->max_hw_sectors = min_not_zero(t->max_hw_sectors, b->max_hw_sectors);
t->seg_boundary_mask = min_not_zero(t->seg_boundary_mask, b->seg_boundary_mask);
- t->max_phys_segments = min(t->max_phys_segments, b->max_phys_segments);
- t->max_hw_segments = min(t->max_hw_segments, b->max_hw_segments);
- t->max_segment_size = min(t->max_segment_size, b->max_segment_size);
+ t->max_phys_segments = min_not_zero(t->max_phys_segments, b->max_phys_segments);
+ t->max_hw_segments = min_not_zero(t->max_hw_segments, b->max_hw_segments);
+ t->max_segment_size = min_not_zero(t->max_segment_size, b->max_segment_size);
t->hardsect_size = max(t->hardsect_size, b->hardsect_size);
if (!t->queue_lock)
WARN_ON_ONCE(1);