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Commit aae5d55a authored by Oleg Drokin's avatar Oleg Drokin Committed by Greg Kroah-Hartman
Browse files

staging/lustre/llite: ll_revalidate_dentry update 



There are a couple of cases in ll_revalidate_dentry() where
we are pretty sure the dentry is valid, so check for them early
and save more expensive checks for later.

Signed-off-by: default avatarOleg Drokin <green@linuxhacker.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6dad4d89

drivers/staging/lustre/lustre/llite/dcache.c

+11 −0
Original line number Diff line number Diff line
@@ -302,6 +302,17 @@ static int ll_revalidate_dentry(struct dentry *dentry, 
{

	struct inode *dir = d_inode(dentry->d_parent);



	/* If this is intermediate component path lookup and we were able to get

	 * to this dentry, then its lock has not been revoked and the

	 * path component is valid.

	 */

	if (lookup_flags & LOOKUP_PARENT)

		return 1;



	/* Symlink - always valid as long as the dentry was found */

	if (dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode))

		return 1;



	/*

	 * if open&create is set, talk to MDS to make sure file is created if

	 * necessary, because we can't do this in ->open() later since that's