Btrfs: add flushoncommit mount option

Browse source

The 'flushoncommit' mount option forces any data dirtied by a write in a
prior transaction to commit as part of the current commit.  This makes
the committed state a fully consistent view of the file system from the
application's perspective (i.e., it includes all completed file system
operations).  This was previously the behavior only when a snapshot is
created.

This is used by Ceph to ensure that completed writes make it to the
platter along with the metadata operations they are bound to (by
BTRFS_IOC_TRANS_{START,END}).

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

...

This commit is contained in:

Sage Weil 2009-04-02 16:59:01 -04:00 • committed by Chris Mason

parent 3a5e14048a

commit dccae99995

3 changed files with 15 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

fs/btrfs/ctree.h

View file

14

fs/btrfs/super.c

View file

5

fs/btrfs/transaction.c

View file