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| author | Amir Goldstein <amir73il@gmail.com> | 2017-04-23 23:12:34 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-05-05 11:38:58 +0200 |
| commit | 595485033db2c24178257698254fd4182fdb4123 (patch) | |
| tree | 3bf250eaea47937c85a65df72af321be67ac78b3 /fs/overlayfs/util.c | |
| parent | a9d019573e881472aa62f093fa599ad68cd0fc1e (diff) | |
| download | linux-595485033db2c24178257698254fd4182fdb4123.tar.gz | |
ovl: set the ORIGIN type flag
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>
Diffstat (limited to 'fs/overlayfs/util.c')
| -rw-r--r-- | fs/overlayfs/util.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c index 2bd4c264ccbe..1c1b6ea7bf7c 100644 --- a/fs/overlayfs/util.c +++ b/fs/overlayfs/util.c @@ -83,11 +83,13 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry) type = __OVL_PATH_UPPER; /* - * Non-dir dentry can hold lower dentry from previous - * location. + * Non-dir dentry can hold lower dentry of its copy up origin. */ - if (oe->numlower && d_is_dir(dentry)) - type |= __OVL_PATH_MERGE; + if (oe->numlower) { + type |= __OVL_PATH_ORIGIN; + if (d_is_dir(dentry)) + type |= __OVL_PATH_MERGE; + } } else { if (oe->numlower > 1) type |= __OVL_PATH_MERGE; |