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
..
ftrace.c	pstore: Add hsize argument in write_buf call of pstore_ftrace_call	2013-07-02 18:39:37 +10:00
inode.c	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
internal.h	pstore: Add file extension to pstore file if compressed	2013-08-19 11:53:27 -07:00
Kconfig	pstore/Kconfig: Select ZLIB_DEFLATE and ZLIB_INFLATE when PSTORE is selected	2013-08-19 10:18:10 -07:00
Makefile	pstore: Add persistent function tracing	2012-07-17 10:05:52 -07:00
platform.c	pstore: Don't allow high traffic options on fragile devices	2013-12-20 13:12:01 -08:00
ram_core.c	pstore/ram: avoid atomic accesses for ioremapped regions	2013-06-14 15:54:21 -07:00
ram.c	pstore/ram: (really) fix undefined usage of rounddown_pow_of_two	2013-08-30 15:57:01 -07:00