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
..
block.c
cache.c
decompressor_multi_percpu.c
decompressor_multi.c	Squashfs: Check stream is not NULL in decompressor_multi.c	2013-11-20 03:59:20 +00:00
decompressor_single.c
decompressor.c
decompressor.h
dir.c
export.c
file_cache.c	Squashfs: Restructure squashfs_readpage()	2013-11-20 03:59:07 +00:00
file_direct.c	Squashfs: fix failure to unlock pages on decompress error	2013-11-24 01:02:50 +00:00
file.c	Squashfs: Restructure squashfs_readpage()	2013-11-20 03:59:07 +00:00
fragment.c
id.c
inode.c
Kconfig	Squashfs: Directly decompress into the page cache for file data	2013-11-20 03:59:13 +00:00
lzo_wrapper.c
Makefile	Squashfs: Directly decompress into the page cache for file data	2013-11-20 03:59:13 +00:00
namei.c
page_actor.c	Squashfs: Directly decompress into the page cache for file data	2013-11-20 03:59:13 +00:00
page_actor.h	Squashfs: Directly decompress into the page cache for file data	2013-11-20 03:59:13 +00:00
squashfs_fs_i.h
squashfs_fs_sb.h
squashfs_fs.h
squashfs.h	Squashfs: Restructure squashfs_readpage()	2013-11-20 03:59:07 +00:00
super.c	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
symlink.c
xattr_id.c
xattr.c
xattr.h
xz_wrapper.c
zlib_wrapper.c