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由 Chris Mason 提交于
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: NChris Mason <chris.mason@oracle.com>
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