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authorJan Kara <jack@suse.cz>2014-05-27 18:48:55 +0200
committerTheodore Ts'o <tytso@mit.edu>2014-05-27 18:48:55 +0200
commiteeece469dedadf3918bad50ad80f4616a0064e90 (patch)
treebe76156b8f8a52bddd90614989d2659cc7368024 /drivers/regulator/helpers.c
parentext4: remove unused local variable "stored" from ext4_readdir(...) (diff)
downloadlinux-eeece469dedadf3918bad50ad80f4616a0064e90.tar.xz
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ext4: fix zeroing of page during writeback
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 <wangxg.fnst@cn.fujitsu.com> Fixes: 5a0dc7365c240 Fixes: bd2d0210cf22f CC: stable@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'drivers/regulator/helpers.c')
0 files changed, 0 insertions, 0 deletions