6.10-stable review patch. If anyone has any objections, please let me know.
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From: Chao Yu chao@kernel.org
commit 5c8764f8679e659c5cb295af7d32279002d13735 upstream.
It will return all zero data when DIO reading from inline_data inode, it is because f2fs_iomap_begin() assign iomap->type w/ IOMAP_HOLE incorrectly for this case.
We can let iomap framework handle inline data via assigning iomap->type and iomap->inline_data correctly, however, it will be a little bit complicated when handling race case in between direct IO and buffered IO.
So, let's force to use buffered IO to fix this issue.
Cc: stable@vger.kernel.org Reported-by: Barry Song v-songbaohua@oppo.com Signed-off-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/f2fs/file.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -825,6 +825,8 @@ static bool f2fs_force_buffered_io(struc return true; if (f2fs_compressed_file(inode)) return true; + if (f2fs_has_inline_data(inode)) + return true;
/* disallow direct IO if any of devices has unaligned blksize */ if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)