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
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Kconfig	…
Makefile	…
dir.c	don't pass nameidata to ->create()	2018-12-07 22:28:00 +04:00
file.c	fs: introduce inode operation ->update_time	2015-07-13 11:17:49 -07:00
getopt.c	…
getopt.h	…
inode.c	fs: push sync_filesystem() down to the file system's remount_fs()	2020-11-19 11:23:46 +01:00
ioctl.c	…
mmap.c	…
ncp_fs.h	…
ncp_fs_i.h	…
ncp_fs_sb.h	…
ncplib_kernel.c	…
ncplib_kernel.h	move d_rcu from overlapping d_child to overlapping d_alias	2017-09-22 19:11:55 +03:00
ncpsign_kernel.c	…
ncpsign_kernel.h	…
sock.c	…
symlink.c	…