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authorNick Piggin <npiggin@suse.de>2009-11-20 23:28:35 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2009-12-17 16:48:12 +0100
commitb9aff027b2c1d6019d237382c78fd396f9de2ea5 (patch)
treeb1a136f50d725d5744ac5b9dbc01e66226ce512f
parentdio: fix use-after-free (diff)
downloadlinux-b9aff027b2c1d6019d237382c78fd396f9de2ea5.tar.xz
linux-b9aff027b2c1d6019d237382c78fd396f9de2ea5.zip
fs: anon_inodes implement dname
Add a d_dname method for anon_inodes filesystem, the same way pipefs and sockfs pseudo filesystems. This allows us to remove the DCACHE_UNHASHED hack from anon_inodes.c (see next patch). [AV: inumber is useless here, dropped from anon_inodefs_dname()] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Miklos Szeredi <mszeredi@suse.cz> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/anon_inodes.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 94f5110c4655..01c529a3f7d2 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -45,6 +45,15 @@ static int anon_inodefs_delete_dentry(struct dentry *dentry)
return 1;
}
+/*
+ * anon_inodefs_dname() is called from d_path().
+ */
+static char *anon_inodefs_dname(struct dentry *dentry, char *buffer, int buflen)
+{
+ return dynamic_dname(dentry, buffer, buflen, "anon_inode:%s",
+ dentry->d_name.name);
+}
+
static struct file_system_type anon_inode_fs_type = {
.name = "anon_inodefs",
.get_sb = anon_inodefs_get_sb,
@@ -52,6 +61,7 @@ static struct file_system_type anon_inode_fs_type = {
};
static const struct dentry_operations anon_inodefs_dentry_operations = {
.d_delete = anon_inodefs_delete_dentry,
+ .d_dname = anon_inodefs_dname,
};
/*