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Documentation: Exporting: update description of d_splice_alias 

Following commits a904937 and 0c1aa9a update the d_splice_alias
desciption.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Phillip Lougher 2011-07-26 03:40:45 +01:00 committed by Al Viro
parent bacb2d816c
commit 5b9f456772
1 changed files with 8 additions and 1 deletions
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9
Documentation/filesystems/nfs/Exporting
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@ -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);
}