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f2fs: fix to wait on block writeback for post_read case

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[ Upstream commit 55fdc1c24a1d6229fe0ecf31335fb9a2eceaaa00 ]

If inode is compressed, but not encrypted, it missed to call
f2fs_wait_on_block_writeback() to wait for GCed page writeback
in IPU write path.

Thread A				GC-Thread
					- f2fs_gc
					 - do_garbage_collect
					  - gc_data_segment
					   - move_data_block
					    - f2fs_submit_page_write
					     migrate normal cluster's block via
					     meta_inode's page cache
- f2fs_write_single_data_page
 - f2fs_do_write_data_page
  - f2fs_inplace_write_data
   - f2fs_submit_page_bio

IRQ
- f2fs_read_end_io
					IRQ
					old data overrides new data due to
					out-of-order GC and common IO.
					- f2fs_read_end_io

Fixes: 4c8ff7095b ("f2fs: support data compression")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chao Yu 2023-12-10 19:35:43 +08:00 committed by Greg Kroah-Hartman
parent e67911d2ca
commit 9bfd5ea715
1 changed files with 4 additions and 3 deletions
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7
fs/f2fs/data.c
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@ -2490,9 +2490,6 @@ int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
page = fio->compressed_page ? fio->compressed_page : fio->page;
/* wait for GCed page writeback via META_MAPPING */
f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
if (fscrypt_inode_uses_inline_crypto(inode))
return 0;
@ -2681,6 +2678,10 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
goto out_writepage;
}
/* wait for GCed page writeback via META_MAPPING */
if (fio->post_read)
f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
/*
* If current allocation needs SSR,
* it had better in-place writes for updated data.