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linux/fs/gfs2
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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
..
acl.c gfs2: use generic posix ACL infrastructure 2014-01-25 23:58:22 -05:00
acl.h gfs2: use generic posix ACL infrastructure 2014-01-25 23:58:22 -05:00
aops.c GFS2: No need to invalidate pages for a dio read 2014-01-14 19:20:49 +00:00
bmap.c GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
bmap.h GFS2: New truncate sequence 2010-09-20 11:18:16 +01:00
dentry.c gfs2: use check_submounts_and_drop() 2013-09-05 16:23:51 -04:00
dir.c GFS2: Add hints to directory leaf blocks 2014-01-08 12:14:57 +00:00
dir.h GFS2: Remember directory insert point 2014-01-06 12:49:43 +00:00
export.c [readdir] constify ->actor 2013-06-29 12:57:05 +04:00
file.c GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
gfs2.h
glock.c GFS2: Don't use ENOBUFS when ENOMEM is the correct error code 2014-01-16 10:31:13 +00:00
glock.h GFS2: Don't use ENOBUFS when ENOMEM is the correct error code 2014-01-16 10:31:13 +00:00
glops.c GFS2: Don't use ENOBUFS when ENOMEM is the correct error code 2014-01-16 10:31:13 +00:00
glops.h GFS2: Fix AIL flush issue during fsync 2011-10-21 12:39:41 +01:00
incore.h GFS2: Don't use ENOBUFS when ENOMEM is the correct error code 2014-01-16 10:31:13 +00:00
inode.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-01-28 08:38:04 -08:00
inode.h GFS2: Add atomic_open support 2013-06-14 11:17:15 +01:00
Kconfig Finally eradicate CONFIG_HOTPLUG 2013-06-03 14:20:18 -07:00
lock_dlm.c gfs2: endianness misannotations 2013-11-15 22:04:16 -05:00
log.c GFS2: Fix use-after-free race when calling gfs2_remove_from_ail 2013-12-13 21:42:23 +00:00
log.h GFS2: aggressively issue revokes in gfs2_log_flush 2013-06-19 09:41:59 +01:00
lops.c Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block 2014-01-30 11:19:05 -08:00
lops.h GFS2: Eliminate gfs2_rg_lops 2013-06-05 09:50:40 +01:00
main.c GFS2: Use RCU/hlist_bl based hash for quotas 2014-01-14 19:27:56 +00:00
Makefile GFS2: Rename ops_inode.c to inode.c 2011-05-10 13:12:49 +01:00
meta_io.c GFS2: Use only a single address space for rgrps 2014-01-03 10:01:50 +00:00
meta_io.h GFS2: Move gfs2_sync_meta to lops.c 2013-08-19 17:26:32 +01:00
ops_fstype.c Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block 2014-01-30 11:19:05 -08:00
quota.c GFS2: Fix kbuild test robot reported warning 2014-01-15 12:57:25 +00:00
quota.h GFS2: Use RCU/hlist_bl based hash for quotas 2014-01-14 19:27:56 +00:00
recovery.c GFS2: fail mount if journal recovery fails 2012-01-11 09:24:48 +00:00
recovery.h gfs2: use workqueue instead of slow-work 2010-07-23 13:14:25 +02:00
rgrp.c GFS2: Small cleanup 2014-01-16 14:22:12 +00:00
rgrp.h GFS2: Don't use ENOBUFS when ENOMEM is the correct error code 2014-01-16 10:31:13 +00:00
super.c fs: push sync_filesystem() down to the file system's remount_fs() 2014-03-13 10:14:33 -04:00
super.h GFS2: Clean up freeze code 2013-01-29 10:29:05 +00:00
sys.c GFS2: Remove obsolete quota tunable 2013-10-04 09:49:29 +01:00
sys.h GFS2: dlm based recovery coordination 2012-01-11 09:23:05 +00:00
trace_gfs2.h GFS2: Add origin indicator to glock demote tracing 2013-04-10 10:32:05 +01:00
trans.c GFS2: fix warning message 2013-06-19 21:29:19 +01:00
trans.h GFS2: Split gfs2_trans_add_bh() into two 2013-01-29 10:28:04 +00:00
util.c GFS2: Move gfs2_icbit_munge into quota.c 2013-10-02 14:47:02 +01:00
util.h GFS2: Move gfs2_icbit_munge into quota.c 2013-10-02 14:47:02 +01:00
xattr.c gfs2: use generic posix ACL infrastructure 2014-01-25 23:58:22 -05:00
xattr.h