On 10/9/14 8:49 AM, Duncan wrote: > Austin S Hemmelgarn posted on Thu, 09 Oct 2014 09:18:22 -0400 as > excerpted: > >> On 2014-10-09 08:34, Duncan wrote: > >>> The only way a read-only >>> mount should be writable is if it's mounted (bind-mounted or >>> btrfs-subvolume-mounted) read-write elsewhere, and the write occurs to >>> that mount, not the read-only mounted location. > >> In theory yes, but there are caveats to this, namely: >> * atime updates still happen unless you have mounted the fs with noatime
Getting off the topic a bit, but that really shouldn't happen: #define IS_NOATIME(inode) __IS_FLG(inode, MS_RDONLY|MS_NOATIME) and in touch_atime(): if (IS_NOATIME(inode)) return; -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html