Theodore Ts'o 02b9984d64 fs: push sync_filesystem() down to the file system's remount_fs() ... Previously, the no-op "mount -o mount /dev/xxx" operation when the file system is already mounted read-write causes an implied, unconditional syncfs(). This seems pretty stupid, and it's certainly documented or guaraunteed to do this, nor is it particularly useful, except in the case where the file system was mounted rw and is getting remounted read-only. However, it's possible that there might be some file systems that are actually depending on this behavior. In most file systems, it's probably fine to only call sync_filesystem() when transitioning from read-write to read-only, and there are some file systems where this is not needed at all (for example, for a pseudo-filesystem or something like romfs). Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: linux-fsdevel@vger.kernel.org Cc: Christoph Hellwig <hch@infradead.org> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Jan Kara <jack@suse.cz> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Anders Larsen <al@alarsen.net> Cc: Phillip Lougher <phillip@squashfs.org.uk> Cc: Kees Cook <keescook@chromium.org> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: Petr Vandrovec <petr@vandrovec.name> Cc: xfs@oss.sgi.com Cc: linux-btrfs@vger.kernel.org Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Cc: codalist@coda.cs.cmu.edu Cc: linux-ext4@vger.kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net Cc: fuse-devel@lists.sourceforge.net Cc: cluster-devel@redhat.com Cc: linux-mtd@lists.infradead.org Cc: jfs-discussion@lists.sourceforge.net Cc: linux-nfs@vger.kernel.org Cc: linux-nilfs@vger.kernel.org Cc: linux-ntfs-dev@lists.sourceforge.net Cc: ocfs2-devel@oss.oracle.com Cc: reiserfs-devel@vger.kernel.org		2014-03-13 10:14:33 -04:00
..
alloc.c	hpfs: remember free space	2014-02-02 16:24:07 -08:00
anode.c	hpfs: convert to use leXX_add_cpu()	2012-10-06 03:05:08 +09:00
buffer.c	hpfs: optimize quad buffer loading	2014-02-02 16:24:07 -08:00
dentry.c	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
dir.c	[readdir] convert hpfs	2013-06-29 12:56:51 +04:00
dnode.c	hpfs: convert to use leXX_add_cpu()	2012-10-06 03:05:08 +09:00
ea.c	hpfs: get rid of bitfields in struct fnode	2012-05-29 23:28:37 -04:00
file.c	truncate: drop 'oldsize' truncate_pagecache() parameter	2013-09-12 15:38:02 -07:00
hpfs_fn.h	hpfs: remember free space	2014-02-02 16:24:07 -08:00
hpfs.h	hpfs: assorted endianness annotations	2012-05-29 23:28:39 -04:00
inode.c	Merge branch 'master' into for-next	2013-01-29 10:48:30 +01:00
Kconfig	HPFS: Make HPFS compile on preempt and SMP	2011-05-09 09:04:23 -07:00
Makefile
map.c	hpfs: implement prefetch to improve performance	2013-07-04 11:22:46 -07:00
name.c	HPFS: Remove CR/LF conversion option	2011-05-09 09:04:23 -07:00
namei.c	locks: break delegations on any attribute modification	2013-11-09 00:16:44 -05:00
super.c	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00