Theodore Ts'o b84ec752b0 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 Change-Id: I03b43c745f82fce2cd3e0856c42eda70d94a45f8		2020-11-19 11:23:46 +01:00
..
alloc.c	HPFS: Fix endianity. Make hpfs work on big-endian machines	2011-05-09 09:04:24 -07:00
anode.c	HPFS: Fix endianity. Make hpfs work on big-endian machines	2011-05-09 09:04:24 -07:00
buffer.c	HPFS: Remove remaining locks	2011-05-09 09:04:23 -07:00
dentry.c	switch hpfs	2011-01-12 20:02:47 -05:00
dir.c	stop passing nameidata to ->lookup()	2018-12-07 22:26:28 +04:00
dnode.c	HPFS: Fix endianity. Make hpfs work on big-endian machines	2011-05-09 09:04:24 -07:00
ea.c	HPFS: Move declaration up, so that there are no out-of-scope pointers	2011-05-09 09:04:24 -07:00
file.c	hpfs: fix warnings when the filesystem fills up	2013-12-20 07:34:21 -08:00
hpfs.h	HPFS: Fix some unaligned accesses	2011-05-09 09:04:24 -07:00
hpfs_fn.h	stop passing nameidata to ->lookup()	2018-12-07 22:26:28 +04:00
inode.c	filesystems: add set_nlink()	2011-11-02 12:53:43 +01:00
Kconfig	HPFS: Make HPFS compile on preempt and SMP	2011-05-09 09:04:23 -07:00
Makefile
map.c	hpfs: better test for errors	2013-07-13 11:03:40 -07:00
name.c	HPFS: Remove CR/LF conversion option	2011-05-09 09:04:23 -07:00
namei.c	don't pass nameidata to ->create()	2018-12-07 22:28:00 +04:00
super.c	fs: push sync_filesystem() down to the file system's remount_fs()	2020-11-19 11:23:46 +01:00