ovl: Add helper ovl_dentry_lowerdata() to get lower data dentry

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Now we have the notion of data dentry and metacopy dentry.
ovl_dentry_lower() will return uppermost lower dentry, but it could be
either data or metacopy dentry.  Now we support metacopy dentries in lower
layers so it is possible that lowerstack[0] is metacopy dentry while
lowerstack[1] is actual data dentry.

So add an helper which returns lowest most dentry which is supposed to be
data dentry.

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

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Vivek Goyal 2018-05-11 11:49:30 -04:00 • committed by Miklos Szeredi

parent 4f93b426ab

commit 647d253fcd

2 changed files with 14 additions and 0 deletions

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fs/overlayfs/overlayfs.h

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13

fs/overlayfs/util.c

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