ovl: set the ORIGIN type flag

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For directory entries, non zero oe->numlower implies OVL_TYPE_MERGE.
Define a new type flag OVL_TYPE_ORIGIN to indicate that an entry holds a
reference to its lower copy up origin.

For directory entries ORIGIN := MERGE && UPPER. For non-dir entries ORIGIN
means that a lower type dentry has been recently copied up or that we were
able to find the copy up origin from overlay.origin xattr.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

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Amir Goldstein 2017-04-23 23:12:34 +03:00 • committed by Miklos Szeredi

parent a9d019573e

commit 595485033d

2 changed files with 8 additions and 4 deletions

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2

fs/overlayfs/overlayfs.h

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10

fs/overlayfs/util.c

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