On Tue, 15 Jun 2010, Valerie Aurora wrote: > When a file on the read-only layer of a union mount is altered, it > must be copied up to the topmost read-write layer. This patch creates > union_copyup() and its supporting routines. > > Thanks to Valdis Kletnieks for a bug fix. What happens if there's a crash in the middle of the copyup? Possible solution is using rename to atomically "replace" the underlying file. That however introduces namespace issues: where to put the temporary file which then needs to be deleted on "fsck.union"? Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
