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authorMing Lei <ming.lei@redhat.com>2019-02-15 14:13:21 +0300
committerJens Axboe <axboe@kernel.dk>2019-02-15 18:40:12 +0300
commit6861428921b51113520cd47897be6c2774e4fc58 (patch)
tree5b25022aba256e4a9d8bfeb8b0d14036d83155b3 /include/linux/bio.h
parent07173c3ec276cbb18dc0e0687d37d310e98a1480 (diff)
downloadlinux-6861428921b51113520cd47897be6c2774e4fc58.tar.xz
block: always define BIO_MAX_PAGES as 256
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: Omar Sandoval <osandov@fb.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/bio.h')
-rw-r--r--include/linux/bio.h8
1 files changed, 0 insertions, 8 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 9f77adcfde82..bdd11d4c2f05 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)