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fs: add nd_jump_link

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Add a helper that abstracts out the jump to an already parsed struct path
from ->follow_link operation from procfs.  Not only does this clean up
the code by moving the two sides of this game into a single helper, but
it also prepares for making struct nameidata private to namei.c

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2012-06-18 10:47:04 -04:00 • committed by Al Viro
commit b5fb63c183
3 changed files with 20 additions and 12 deletions
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3
fs/proc/base.c
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@ -1438,8 +1438,7 @@ static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
if (error)
goto out;
path_put(&nd->path);
nd->path = path;
nd_jump_link(nd, &path);
return NULL;
out:
return ERR_PTR(error);