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| author | Nick Piggin <npiggin@suse.de> | 2009-11-20 23:28:35 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-12-17 16:48:12 +0100 |
| commit | b9aff027b2c1d6019d237382c78fd396f9de2ea5 (patch) | |
| tree | b1a136f50d725d5744ac5b9dbc01e66226ce512f /fs/anon_inodes.c | |
| parent | dio: fix use-after-free (diff) | |
| download | linux-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>
Diffstat (limited to 'fs/anon_inodes.c')
| -rw-r--r-- | fs/anon_inodes.c | 10 |
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, }; /* |