f2fs: fix m_may_create to make OPU DIO write correctly

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Previously, we added a parameter @map.m_may_create to trigger OPU
allocation and call f2fs_balance_fs() correctly.

But in get_more_blocks(), @create has been overwritten by below code.
So the function f2fs_map_blocks() will not allocate new block address
but directly go out. Meanwile,there are several functions calling
f2fs_map_blocks() directly and @map.m_may_create not initialized.
CODE:
create = dio->op == REQ_OP_WRITE;
	if (dio->flags & DIO_SKIP_HOLES) {
		if (fs_startblk <= ((i_size_read(dio->inode) - 1) >>
						i_blkbits))
			create = 0;
	}

This patch fixes it.

Signed-off-by: Jia Zhu <zhujia13@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

...

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Jia Zhu 2018-11-20 04:29:35 +08:00 • committed by Jaegeuk Kim

parent 73c0a9272a

commit f4f0b6777d

2 changed files with 8 additions and 1 deletions

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5

fs/f2fs/data.c

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4

fs/f2fs/file.c

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