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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-12-04 10:56:35 +0300 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-12-29 10:29:51 +0300 |
| commit | 18af8b2ca34b831c32c6fa01e7ce33143c33bb63 (patch) | |
| tree | 0feb71c891dea467c88181b1974d15cf58243f9a | |
| parent | a6f23657d3072bde6844055bbc2290e497f33fbc (diff) | |
| download | linux-18af8b2ca34b831c32c6fa01e7ce33143c33bb63.tar.xz | |
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>
| -rw-r--r-- | block/blk-settings.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index afa55e14e278..59fd05d9f1d5 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); |