From 5b9f4567726513a359e70f85029482c7c3714dbd Mon Sep 17 00:00:00 2001 From: Phillip Lougher Date: Tue, 26 Jul 2011 03:40:45 +0100 Subject: Documentation: Exporting: update description of d_splice_alias Following commits a904937 and 0c1aa9a update the d_splice_alias desciption. Signed-off-by: Phillip Lougher Signed-off-by: Al Viro --- Documentation/filesystems/nfs/Exporting | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/filesystems/nfs/Exporting b/Documentation/filesystems/nfs/Exporting index 87019d2b598..09994c24728 100644 --- a/Documentation/filesystems/nfs/Exporting +++ b/Documentation/filesystems/nfs/Exporting @@ -92,7 +92,14 @@ For a filesystem to be exportable it must: 1/ provide the filehandle fragment routines described below. 2/ make sure that d_splice_alias is used rather than d_add when ->lookup finds an inode for a given parent and name. - Typically the ->lookup routine will end with a: + + If inode is NULL, d_splice_alias(inode, dentry) is eqivalent to + + d_add(dentry, inode), NULL + + Similarly, d_splice_alias(ERR_PTR(err), dentry) = ERR_PTR(err) + + Typically the ->lookup routine will simply end with a: return d_splice_alias(inode, dentry); } -- cgit v1.2.3