Subject: + fs-direct-io-remove-redundant-comparison.patch added to -mm tree
To: guz.fnst@xxxxxxxxxxxxxx,jmoyer@xxxxxxxxxx,viro@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 21 Feb 2014 12:24:28 -0800
The patch titled
Subject: fs/direct-io: remove redundant comparison
has been added to the -mm tree. Its filename is
fs-direct-io-remove-redundant-comparison.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/fs-direct-io-remove-redundant-comparison.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/fs-direct-io-remove-redundant-comparison.patch
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------------------------------------------------------
From: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Subject: fs/direct-io: remove redundant comparison
The return value of bio_get_nr_vecs() cannot be bigger than BIO_MAX_PAGES,
so we can remove redundant the comparison between nr_pages and
BIO_MAX_PAGES.
Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Jeff Moyer <jmoyer@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/direct-io.c | 1 -
1 file changed, 1 deletion(-)
diff -puN fs/direct-io.c~fs-direct-io-remove-redundant-comparison fs/direct-io.c
--- a/fs/direct-io.c~fs-direct-io-remove-redundant-comparison
+++ a/fs/direct-io.c
@@ -664,7 +664,6 @@ static inline int dio_new_bio(struct dio
goto out;
sector = start_sector << (sdio->blkbits - 9);
nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev));
- nr_pages = min(nr_pages, BIO_MAX_PAGES);
BUG_ON(nr_pages <= 0);
dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages);
sdio->boundary = 0;
_
Patches currently in -mm which might be from guz.fnst@xxxxxxxxxxxxxx are
fs-direct-io-remove-redundant-comparison.patch
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