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ovl: fix mount option checks for nfs_export with no upperdir

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Without upperdir mount option, there is no index dir and the dependency
checks nfs_export => index for mount options parsing are incorrect.

Allow the combination nfs_export=on,index=off with no upperdir and move
the check for dependency redirect_dir=nofollow for non-upper mount case
to mount options parsing.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Amir Goldstein
2020-07-13 17:19:44 +03:00
committed by Miklos Szeredi
parent 470c156361
commit f0e1266ed2
2 changed files with 20 additions and 15 deletions
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4
Documentation/filesystems/overlayfs.rst
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@@ -560,8 +560,8 @@ When the NFS export feature is enabled, all directory index entries are
verified on mount time to check that upper file handles are not stale.
This verification may cause significant overhead in some cases.
Note: the mount options index=off,nfs_export=on are conflicting and will
result in an error.
Note: the mount options index=off,nfs_export=on are conflicting for a
read-write mount and will result in an error.
Testsuite