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f2fs: fix to force buffered IO on inline_data inode
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>
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@ -825,6 +825,8 @@ static bool f2fs_force_buffered_io(struct inode *inode, int rw)
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return true;
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if (f2fs_compressed_file(inode))
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return true;
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if (f2fs_has_inline_data(inode))
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return true;
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/* disallow direct IO if any of devices has unaligned blksize */
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if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
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