From: Jan Blunck <jblunck@suse.de>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Cc: viro@zeniv.linux.org.uk, bharata@in.ibm.com, dwmw2@infradead.org,
mszeredi@suse.cz, vaurora@redhat.com
Subject: [PATCH 28/32] union-mount: Basic fallthru definitions
Date: Mon, 18 May 2009 18:09:24 +0200 [thread overview]
Message-ID: <1242662968-11684-29-git-send-email-jblunck@suse.de> (raw)
In-Reply-To: <1242662968-11684-1-git-send-email-jblunck@suse.de>
From: Valerie Aurora (Henson) <vaurora@redhat.com>
Define the fallthru dcache flag and file system op.
Signed-off-by: Valerie Aurora (Henson) <vaurora@redhat.com>
---
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
next prev parent reply other threads:[~2009-05-18 16:09 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-18 16:08 [PATCH 00/32] VFS based Union Mount (V3) Jan Blunck
2009-05-18 16:08 ` [PATCH 01/32] atomic: Only take lock when the counter drops to zero on UP as well Jan Blunck
2009-05-18 16:08 ` [PATCH 02/32] VFS: BUG() if somebody tries to rehash an already hashed dentry Jan Blunck
2009-05-18 16:08 ` [PATCH 03/32] VFS: propagate mnt_flags into do_loopback Jan Blunck
2009-05-18 16:09 ` [PATCH 04/32] VFS: Make lookup_hash() return a struct path Jan Blunck
2009-05-18 16:09 ` [PATCH 05/32] VFS: Remove unnecessary micro-optimization in cached_lookup() Jan Blunck
2009-05-18 16:09 ` [PATCH 06/32] VFS: Make real_lookup() return a struct path Jan Blunck
2009-05-18 16:09 ` [PATCH 07/32] VFS: Introduce dput() variant that maintains a kill-list Jan Blunck
2009-05-18 16:09 ` [PATCH 08/32] whiteout: Don't return information about whiteouts to userspace Jan Blunck
2009-05-18 16:09 ` [PATCH 09/32] whiteout: Add vfs_whiteout() and whiteout inode operation Jan Blunck
2009-05-18 16:09 ` [PATCH 10/32] whiteout: Set S_OPAQUE inode flag when creating directories Jan Blunck
2009-05-18 16:09 ` [PATCH 11/32] whiteout: Add whiteout support to tmpfs Jan Blunck
2009-05-18 16:09 ` [PATCH 12/32] whiteout: Split of ext2_append_link() from ext2_add_link() Jan Blunck
2009-05-18 16:09 ` [PATCH 13/32] whiteout: Add whiteout support to ext2 Jan Blunck
2009-05-18 16:09 ` [PATCH 14/32] whiteout: Add path_whiteout() helper Jan Blunck
2009-05-18 16:09 ` [PATCH 15/32] union-mount: Documentation Jan Blunck
2009-05-25 6:25 ` hooanon05
2009-05-25 8:03 ` Arnd Bergmann
2009-05-25 8:43 ` hooanon05
2009-06-18 19:05 ` Valerie Aurora
2009-06-19 1:53 ` hooanon05
2009-05-18 16:09 ` [PATCH 16/32] union-mount: Introduce MNT_UNION and MS_UNION flags Jan Blunck
2009-05-18 16:09 ` [PATCH 17/32] union-mount: Introduce union_mount structure Jan Blunck
2009-05-18 16:09 ` [PATCH 18/32] union-mount: Drive the union cache via dcache Jan Blunck
2009-05-18 16:09 ` [PATCH 19/32] union-mount: Some checks during namespace changes Jan Blunck
2009-05-18 16:09 ` [PATCH 20/32] union-mount: Changes to the namespace handling Jan Blunck
2009-05-18 16:09 ` [PATCH 21/32] union-mount: Make lookup work for union-mounted file systems Jan Blunck
2009-05-19 16:15 ` Miklos Szeredi
2009-05-19 17:30 ` Valerie Aurora
2009-05-20 10:21 ` Miklos Szeredi
2009-05-18 16:09 ` [PATCH 22/32] union-mount: stop lookup when directory has S_OPAQUE flag set Jan Blunck
2009-05-18 16:09 ` [PATCH 23/32] union-mount: stop lookup when finding a whiteout Jan Blunck
2009-05-18 16:09 ` [PATCH 24/32] union-mount: in-kernel file copy between union mounted filesystems Jan Blunck
2009-05-18 16:09 ` [PATCH 25/32] union-mount: check for logically empty directory (FIXME) Jan Blunck
2009-05-18 16:09 ` [PATCH 26/32] union-mount: call do_whiteout() on unlink and rmdir Jan Blunck
2009-05-18 16:09 ` [PATCH 27/32] union-mount: Always create topmost directory on open Jan Blunck
2009-05-18 16:09 ` Jan Blunck [this message]
2009-05-18 16:09 ` [PATCH 29/32] union mount: Support for fallthru entries in union mount lookup Jan Blunck
2009-05-18 16:09 ` [PATCH 30/32] union mount: ext2 fallthru support Jan Blunck
2009-05-18 16:32 ` Andreas Dilger
2009-05-19 9:42 ` Jan Blunck
2009-05-19 14:05 ` Andreas Dilger
2009-05-19 16:13 ` Jan Blunck
2009-05-18 16:09 ` [PATCH 31/32] union-mount: tmpfs " Jan Blunck
2009-05-18 16:09 ` [PATCH 32/32] union-mount: Copy up directory entries on first readdir() Jan Blunck
2009-05-18 20:40 ` [PATCH] Userland for VFS based Union Mount (V3) Valerie Aurora
2009-05-21 13:53 ` Andreas Dilger
2009-06-18 3:22 ` Valerie Aurora
2009-05-19 9:48 ` [PATCH 00/32] " Miklos Szeredi
2009-05-19 10:29 ` Jan Blunck
2009-05-19 10:35 ` Miklos Szeredi
2009-05-19 10:39 ` Jan Blunck
2009-05-19 11:54 ` Arnd Bergmann
2009-05-19 12:15 ` Jan Blunck
2009-05-19 12:21 ` Arnd Bergmann
2009-05-19 13:10 ` Jan Blunck
2009-05-19 17:23 ` Valerie Aurora
2009-05-20 9:05 ` Miklos Szeredi
2009-06-08 19:44 ` Valerie Aurora
2009-06-16 15:19 ` Miklos Szeredi
2009-05-21 12:54 ` Jan Rekorajski
2009-06-08 19:57 ` Valerie Aurora
2009-06-08 22:44 ` Jan Rekorajski
2009-06-08 22:48 ` Valerie Aurora
2009-06-15 9:55 ` Jan Rekorajski
2009-06-18 3:23 ` Valerie Aurora
2009-06-04 11:38 ` Scott James Remnant
2009-06-09 22:15 ` Valerie Aurora
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