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zio write issue threads should have lower (numerically greater) priority

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This is because they might do data compression which is quite CPU
expensive.  The original code is correct for illumos, because there
a higher priority corresponds to a greater number.

MFC after:	2 weeks
This commit is contained in:
Andriy Gapon 2016-04-08 11:58:24 +00:00
parent 42e88fe650
commit c8ff459286
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=297709
1 changed files with 1 additions and 1 deletions
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2
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
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@ -929,7 +929,7 @@ spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q)
* than the other taskqs.
*/
if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE)
pri--;
pri++;
tq = taskq_create_proc(name, value, pri, 50,
INT_MAX, spa->spa_proc, flags);