| commit | f83e826181f7f8fb152e4190d03854fc3a5dd040 | |
| author | Konstantin Khlebnikov <khlebnikov@openvz.org> | |
| Sun, 3 Apr 2011 22:15:02 +0000 (4 00:15 +0200) | ||
| committer | Jens Axboe <jaxboe@fusionio.com> | |
| Tue, 5 Apr 2011 21:52:49 +0000 (5 23:52 +0200) | ||
| tree | 989f440665d529587fcc6365b1968e2b29fb7c94 | treesnapshot (tar.gz zip) |
| parent | a63a5cf84dac7a23a57c800eea5734701e7d3c04 | commitdiff |
block: fix request sorting at unplug
Comparison function for list_sort() must be anticommutative,
otherwise it is not sorting in ordinary meaning.
But fortunately list_sort() always check ((*cmp)(priv, a, b) <= 0)
it not distinguish negative and zero, so comparison function can
implement only less-or-equal instead of full three-way comparison.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Comparison function for list_sort() must be anticommutative,
otherwise it is not sorting in ordinary meaning.
But fortunately list_sort() always check ((*cmp)(priv, a, b) <= 0)
it not distinguish negative and zero, so comparison function can
implement only less-or-equal instead of full three-way comparison.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| block/blk-core.c | diffblobblamehistory |