Eryu Guan 73fdad00b2 ext4: protect i_disksize update by i_data_sem in direct write path ... i_disksize update should be protected by i_data_sem, by either taking the lock explicitly or by using ext4_update_i_disksize() helper. But the i_disksize updates in ext4_direct_IO_write() are not protected at all, which may be racing with i_disksize updates in writeback path in delalloc buffer write path. This is found by code inspection, and I didn't hit any i_disksize corruption due to this bug. Thanks to Jan Kara for catching this bug and suggesting the fix! Reported-by: Jan Kara <jack@suse.cz> Suggested-by: Jan Kara <jack@suse.cz> Signed-off-by: Eryu Guan <guaneryu@gmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org		2018-03-22 11:41:25 -04:00
..
acl.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
acl.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
balloc.c	ext4: don't update checksum of new initialized bitmaps	2018-02-19 14:16:47 -05:00
bitmap.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
block_validity.c	ext4: use 'sbi' instead of 'EXT4_SB(sb)'	2018-01-11 13:17:49 -05:00
dir.c	iversion: Rename make inode_cmp_iversion{+raw} to inode_eq_iversion{+raw}	2018-02-01 08:15:25 -05:00
ext4.h	ext4: fixed alignment and minor code cleanup in ext4.h	2018-01-07 23:36:19 -05:00
ext4_extents.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
ext4_jbd2.c	ext4: shutdown should not prevent get_write_access	2018-02-18 22:07:36 -05:00
ext4_jbd2.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
extents.c	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
extents_status.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
extents_status.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
file.c	ext4: fix ENOSPC handling in DAX page fault handler	2018-01-07 16:41:01 -05:00
fsmap.c	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
fsmap.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
fsync.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
hash.c	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
ialloc.c	ext4: don't update checksum of new initialized bitmaps	2018-02-19 14:16:47 -05:00
indirect.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
inline.c	iversion.h related cleanup for v4.16	2018-02-07 14:25:22 -08:00
inode.c	ext4: protect i_disksize update by i_data_sem in direct write path	2018-03-22 11:41:25 -04:00
ioctl.c	ext4: pass -ESHUTDOWN code to jbd2 layer	2018-02-18 23:45:18 -05:00
Kconfig	fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at	2018-01-01 12:45:37 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mballoc.c	ext4: use 'sbi' instead of 'EXT4_SB(sb)'	2018-01-11 13:17:49 -05:00
mballoc.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
migrate.c	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
mmp.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
move_extent.c	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
namei.c	Refactor support for encrypted symlinks to move common code to fscrypt.	2018-02-04 10:43:12 -08:00
page-io.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
readpage.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
resize.c	ext4: use 'sbi' instead of 'EXT4_SB(sb)'	2018-01-11 13:17:49 -05:00
super.c	ext4: add tracepoints for shutdown and file system errors	2018-02-18 20:53:23 -05:00
symlink.c	ext4: switch to fscrypt_get_symlink()	2018-01-11 22:10:40 -05:00
sysfs.c	ext4: create ext4_kset dynamically	2018-01-11 15:34:04 -05:00
truncate.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
xattr.c	ext4: convert to new i_version API	2018-01-29 06:42:21 -05:00
xattr.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
xattr_security.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xattr_trusted.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xattr_user.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00