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f2fs: compress: remove unneeded read when rewrite whole cluster

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[ Upstream commit 7eab7a6968 ]

when we overwrite the whole page in cluster, we don't need read original
data before write, because after write_end(), writepages() can help to
load left data in that cluster.

Signed-off-by: Fengnan Chang <changfengnan@vivo.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Fengnan Chang
2021-06-22 19:50:59 +08:00
committed by Greg Kroah-Hartman
parent 2c4741d1b0
commit 1c4d94e4f0
1 changed files with 3 additions and 0 deletions
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3
fs/f2fs/data.c
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@@ -3461,6 +3461,9 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
*fsdata = NULL;
if (len == PAGE_SIZE)
goto repeat;
ret = f2fs_prepare_compress_overwrite(inode, pagep,
index, fsdata);
if (ret < 0) {