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ovl: verify directory index entries on mount

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Directory index entries should have 'upper' xattr pointing to the real
upper dir. Verifying that the upper dir file handle is not stale is
expensive, so only verify stale directory index entries on mount if
NFS export feature is enabled.

Signed-off-by: Amir Goldstein <[email protected]>
Signed-off-by: Miklos Szeredi <[email protected]>
This commit is contained in:
Amir Goldstein 2018-01-11 11:33:24 +02:00 • committed by Miklos Szeredi
commit e8f9e5b780
2 changed files with 94 additions and 32 deletions
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1
fs/dcache.c
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@ -3527,6 +3527,7 @@ bool is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
return result;
}
EXPORT_SYMBOL(is_subdir);
static enum d_walk_ret d_genocide_kill(void *data, struct dentry *dentry)
{