Author: jimharris
Date: Thu Jan 7 15:57:17 2016
New Revision: 293320
URL: https://svnweb.freebsd.org/changeset/base/293320
Log:
nvd: do not wait for previous bios before submitting ordered bio
Still wait until all in-flight bios (including the ordered bio)
complete before processing more bios from the queue.
MFC after: 3 days
Sponsored by: Intel
Modified:
head/sys/dev/nvd/nvd.c
Modified: head/sys/dev/nvd/nvd.c
==============================================================================
--- head/sys/dev/nvd/nvd.c Thu Jan 7 15:55:41 2016 (r293319)
+++ head/sys/dev/nvd/nvd.c Thu Jan 7 15:57:17 2016 (r293320)
@@ -204,19 +204,6 @@ nvd_bioq_process(void *arg, int pending)
if (bp == NULL)
break;
-#ifdef BIO_ORDERED
- /*
- * BIO_ORDERED flag dictates that all outstanding bios
- * must be completed before processing the bio with
- * BIO_ORDERED flag set.
- */
- if (bp->bio_flags & BIO_ORDERED) {
- while (ndisk->cur_depth > 0) {
- pause("nvd flush", 1);
- }
- }
-#endif
-
bp->bio_driver1 = NULL;
atomic_add_int(&ndisk->cur_depth, 1);
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