tree 8c6cf2661f1f15869acdbbf7096bce2e19a1c1e1
parent d2c3f4f695edac4d75c1b3eb01a1d16072de63bb
author Chris Mason <chris.mason@oracle.com> 1227125615 -0500
committer Chris Mason <chris.mason@oracle.com> 1227125615 -0500

Btrfs: Do fsync log replay when mount -o ro, except when on readonly media

fsync log replay can change the filesystem, so it cannot be delayed until
mount -o rw,remount, and it can't be forgotten entirely.  So, this patch
changes btrfs to do with reiserfs, ext3 and xfs do, which is to do the
log replay even when mounted readonly.

On a readonly device if log replay is required, the mount is aborted.

Getting all of this right had required fixing up some of the error
handling in open_ctree.

Signed-off-by: Chris Mason <chris.mason@oracle.com>