From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Blunck Subject: [PATCH 28/32] union-mount: Basic fallthru definitions Date: Mon, 18 May 2009 18:09:24 +0200 Message-ID: <1242662968-11684-29-git-send-email-jblunck@suse.de> References: <1242662968-11684-1-git-send-email-jblunck@suse.de> Cc: viro@zeniv.linux.org.uk, bharata@in.ibm.com, dwmw2@infradead.org, mszeredi@suse.cz, vaurora@redhat.com To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Return-path: Received: from cantor2.suse.de ([195.135.220.15]:56885 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754014AbZERQJa (ORCPT ); Mon, 18 May 2009 12:09:30 -0400 In-Reply-To: <1242662968-11684-1-git-send-email-jblunck@suse.de> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: Valerie Aurora (Henson) Define the fallthru dcache flag and file system op. Signed-off-by: Valerie Aurora (Henson) --- include/linux/dcache.h | 6 ++++++ include/linux/fs.h | 1 + 2 files changed, 7 insertions(+), 0 deletions(-) diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 7930b07..9534813 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -192,6 +192,7 @@ d_iput: no no no yes #define DCACHE_INOTIFY_PARENT_WATCHED 0x0020 /* Parent inode is watched */ #define DCACHE_COOKIE 0x0040 /* For use by dcookie subsystem */ #define DCACHE_WHITEOUT 0x0080 /* This negative dentry is a whiteout */ +#define DCACHE_FALLTHRU 0x0100 /* Keep looking in the file system below */ extern spinlock_t dcache_lock; extern seqlock_t rename_lock; @@ -373,6 +374,11 @@ static inline int d_is_whiteout(struct dentry *dentry) return (dentry->d_flags & DCACHE_WHITEOUT); } +static inline int d_is_fallthru(struct dentry *dentry) +{ + return (dentry->d_flags & DCACHE_FALLTHRU); +} + static inline struct dentry *dget_parent(struct dentry *dentry) { struct dentry *ret; diff --git a/include/linux/fs.h b/include/linux/fs.h index 7f07768..dd9c859 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1351,6 +1351,7 @@ struct inode_operations { int (*rmdir) (struct inode *,struct dentry *); int (*mknod) (struct inode *,struct dentry *,int,dev_t); int (*whiteout) (struct inode *, struct dentry *, struct dentry *); + int (*fallthru) (struct inode *, struct dentry *); int (*rename) (struct inode *, struct dentry *, struct inode *, struct dentry *); int (*readlink) (struct dentry *, char __user *,int); -- 1.6.1.3