[V11,16/19] block: always define BIO_MAX_PAGES as 256
diff mbox series

Message ID 20181121032327.8434-17-ming.lei@redhat.com
State New
Headers show
Series
  • block: support multi-page bvec
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Commit Message

Ming Lei Nov. 21, 2018, 3:23 a.m. UTC
Now multi-page bvec can cover CONFIG_THP_SWAP, so we don't need to
increase BIO_MAX_PAGES for it.

CONFIG_THP_SWAP needs to split one THP into normal pages and adds
them all to one bio. With multipage-bvec, it just takes one bvec to
hold them all.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 include/linux/bio.h | 8 --------
 1 file changed, 8 deletions(-)

Patch
diff mbox series

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 7edad188568a..e5b975fa0558 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -34,15 +34,7 @@ 
 #define BIO_BUG_ON
 #endif
 
-#ifdef CONFIG_THP_SWAP
-#if HPAGE_PMD_NR > 256
-#define BIO_MAX_PAGES		HPAGE_PMD_NR
-#else
 #define BIO_MAX_PAGES		256
-#endif
-#else
-#define BIO_MAX_PAGES		256
-#endif
 
 #define bio_prio(bio)			(bio)->bi_ioprio
 #define bio_set_prio(bio, prio)		((bio)->bi_ioprio = prio)