linux/fs/ext2
Boaz Harrosh 0e3b210ce1 dax: use pfn_mkwrite to update c/mtime + freeze protection
From: Yigal Korman <yigal@plexistor.com>

[v1]
Without this patch, c/mtime is not updated correctly when mmap'ed page is
first read from and then written to.

A new xfstest is submitted for testing this (generic/080)

[v2]
Jan Kara has pointed out that if we add the
sb_start/end_pagefault pair in the new pfn_mkwrite we
are then fixing another bug where: A user could start
writing to the page while filesystem is frozen.

Signed-off-by: Yigal Korman <yigal@plexistor.com>
Signed-off-by: Boaz Harrosh <boaz@plexistor.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-15 16:35:20 -07:00
..
acl.c ext2: acl: remove unneeded include of linux/capability.h 2014-04-01 23:36:43 +02:00
acl.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
balloc.c Ext2: remove the static function release_blocks to optimize the kernel 2013-02-07 16:44:56 +01:00
dir.c [readdir] simple local unixlike: switch to ->iterate() 2013-06-29 12:46:47 +04:00
ext2.h ext2: get rid of most mentions of XIP in ext2 2015-02-16 17:56:04 -08:00
file.c dax: use pfn_mkwrite to update c/mtime + freeze protection 2015-04-15 16:35:20 -07:00
ialloc.c fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info 2015-01-20 14:03:04 -07:00
inode.c fs: move struct kiocb to fs.h 2015-03-25 20:28:11 -04:00
ioctl.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
Kconfig vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX 2015-02-16 17:56:04 -08:00
Makefile ext2: remove xip.c and xip.h 2015-02-16 17:56:03 -08:00
namei.c ext2: get rid of most mentions of XIP in ext2 2015-02-16 17:56:04 -08:00
super.c ext2: get rid of most mentions of XIP in ext2 2015-02-16 17:56:04 -08:00
symlink.c ext2: symlink must be handled via filesystem specific operation 2010-04-12 21:11:25 +02:00
xattr_security.c fs: Mark function as static in ext2/xattr_security.c 2014-03-03 11:30:59 +01:00
xattr_trusted.c migrate ext2_fs.h guts to fs/ext2/ext2.h 2012-03-31 16:03:16 -04:00
xattr_user.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr.c ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
xattr.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00