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eeece469de
linux/fs/ext4
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Jan Kara eeece469de 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: 5a0dc7365c
Fixes: bd2d0210cf
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2014-05-27 12:48:55 -04:00
..
acl.c ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
acl.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
balloc.c ext4: make local functions static 2014-05-12 10:50:23 -04:00
bitmap.c
block_validity.c fs/ext4: use rbtree postorder iteration helper instead of opencoding 2014-01-23 16:37:03 -08:00
dir.c ext4: remove unused local variable "stored" from ext4_readdir(...) 2014-05-27 12:48:55 -04:00
ext4_extents.h ext4: rename uninitialized extents to unwritten 2014-04-20 23:45:47 -04:00
ext4_jbd2.c ext4: make local functions static 2014-05-12 10:50:23 -04:00
ext4_jbd2.h ext4: make local functions static 2014-05-12 10:50:23 -04:00
ext4.h ext4: make local functions static 2014-05-12 10:50:23 -04:00
extents_status.c ext4: use EXT_MAX_BLOCKS in ext4_es_can_be_merged() 2014-05-12 22:21:43 -04:00
extents_status.h ext4: add ext4_es_store_pblock_status() 2014-02-19 20:15:15 -05:00
extents.c ext4: fix ZERO_RANGE test failure in data journalling 2014-05-27 12:48:55 -04:00
file.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
fsync.c
hash.c
ialloc.c
indirect.c
inline.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
inode.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
ioctl.c ext4: clean up error handling in swap_inode_boot_loader() 2014-02-17 20:44:36 -05:00
Kconfig
Makefile
mballoc.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
mballoc.h ext4: remove unused ac_ex_scanned 2014-02-20 13:32:10 -05:00
migrate.c ext4: remove unnecessary double parentheses 2014-05-12 12:55:07 -04:00
mmp.c ext4: make local functions static 2014-05-12 10:50:23 -04:00
move_extent.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
namei.c ext4: reduce contention on s_orphan_lock 2014-05-26 11:56:53 -04:00
page-io.c ext4: fix zeroing of page during writeback 2014-05-27 12:48:55 -04:00
resize.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
super.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
symlink.c
truncate.h
xattr_security.c
xattr_trusted.c
xattr_user.c
xattr.c ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access 2014-05-12 22:06:43 -04:00
xattr.h ext4: each filesystem creates and uses its own mb_cache 2014-03-18 19:24:49 -04:00