f2fs: don't use GFP_ZERO for page caches

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Related to https://lkml.org/lkml/2018/4/8/661

Sometimes, we need to write meta data to new allocated block address,
then we will allocate a zeroed page in inner inode's address space, and
fill partial data in it, and leave other place with zero value which means
some fields are initial status.

There are two inner inodes (meta inode and node inode) setting __GFP_ZERO,
I have just checked them, for both of them, we can avoid using __GFP_ZERO,
and do initialization by ourselves to avoid unneeded/redundant zeroing
from mm.

Cc: <stable@vger.kernel.org>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Chao Yu 2018-04-09 20:25:06 +08:00 • committed by Jaegeuk Kim

parent 241b493d8f

commit 81114baa83

4 changed files with 9 additions and 3 deletions

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4

fs/f2fs/checkpoint.c

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4

fs/f2fs/inode.c

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3

fs/f2fs/segment.c

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1

fs/f2fs/segment.h

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