On Thu, May 22, 2014 at 05:06:43PM +0200, Jan Kara wrote:
> Tail of a page straddling inode size must be zeroed when being written
> out due to POSIX requirement that modifications of mmaped page beyond
> inode size must not be written to the file. ext4_bio_write_page() did
> this only for blocks fully beyond inode size but didn't properly zero
> blocks partially beyond inode size. Fix this.
>
> The problem has been uncovered by mmap_11-4 test in openposix test suite
> (part of LTP).
>
> Reported-by: Xiaoguang Wang <[email protected]>
> Fixes: 5a0dc7365c240
> Fixes: bd2d0210cf22f
> CC: [email protected]
> Signed-off-by: Jan Kara <[email protected]>
Applied, thanks.
- Ted
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