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authorAl Viro <viro@zeniv.linux.org.uk>2013-02-14 22:38:02 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-26 02:43:22 -0500
commit3451538a114d738a6528b1da58e19e7d8964c647 (patch)
tree6aeefee69b655c3a0817c6fb7c3771d69937e630 /mm
parent3f3834c35466324e3a7d7bf3a950dbcd99645f38 (diff)
downloadvexpress-lsk-3451538a114d738a6528b1da58e19e7d8964c647.tar.gz
shmem_setup_file(): use d_alloc_pseudo() instead of d_alloc()
Note that provided ->d_dname() reproduces what we used to get for those guys in e.g. /proc/self/maps; it might be a good idea to change that to something less ugly, but for now let's keep the existing user-visible behaviour Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm')
-rw-r--r--mm/shmem.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index 8b4c198552b..25cd688bd20 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2865,6 +2865,16 @@ EXPORT_SYMBOL_GPL(shmem_truncate_range);
/* common code */
+static char *shmem_dname(struct dentry *dentry, char *buffer, int buflen)
+{
+ return dynamic_dname(dentry, buffer, buflen, "/%s (deleted)",
+ dentry->d_name.name);
+}
+
+static struct dentry_operations anon_ops = {
+ .d_dname = shmem_dname
+};
+
/**
* shmem_file_setup - get an unlinked file living in tmpfs
* @name: name for dentry (to be seen in /proc/<pid>/maps
@@ -2876,7 +2886,7 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
struct file *res;
struct inode *inode;
struct path path;
- struct dentry *root;
+ struct super_block *sb;
struct qstr this;
if (IS_ERR(shm_mnt))
@@ -2892,14 +2902,15 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
this.name = name;
this.len = strlen(name);
this.hash = 0; /* will go */
- root = shm_mnt->mnt_root;
- path.dentry = d_alloc(root, &this);
+ sb = shm_mnt->mnt_sb;
+ path.dentry = d_alloc_pseudo(sb, &this);
if (!path.dentry)
goto put_memory;
+ d_set_d_op(path.dentry, &anon_ops);
path.mnt = mntget(shm_mnt);
res = ERR_PTR(-ENOSPC);
- inode = shmem_get_inode(root->d_sb, NULL, S_IFREG | S_IRWXUGO, 0, flags);
+ inode = shmem_get_inode(sb, NULL, S_IFREG | S_IRWXUGO, 0, flags);
if (!inode)
goto put_dentry;