[RFCv2,2/5] fs/anon_inodes: get a new inode

Commit Message

??? June 26, 2015, 9:58 a.m. UTC

A inode is necessary for some drivers that needs special address_space
and address_space_operation for page migration. Each drivers can create
inode with the anon_inodefs.

Signed-off-by: Gioh Kim <[e-mail]>
---
 fs/anon_inodes.c            | 6 ++++++
 include/linux/anon_inodes.h | 1 +
 2 files changed, 7 insertions(+)

Patch

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 80ef38c..1d51f96 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -162,6 +162,12 @@  err_put_unused_fd:
 }
 EXPORT_SYMBOL_GPL(anon_inode_getfd);
 
+struct inode *anon_inode_new(void)
+{
+	return alloc_anon_inode(anon_inode_mnt->mnt_sb);
+}
+EXPORT_SYMBOL_GPL(anon_inode_new);
+
 static int __init anon_inode_init(void)
 {
 	anon_inode_mnt = kern_mount(&anon_inode_fs_type);
diff --git a/include/linux/anon_inodes.h b/include/linux/anon_inodes.h
index 8013a45..ddbd67f 100644
--- a/include/linux/anon_inodes.h
+++ b/include/linux/anon_inodes.h
@@ -15,6 +15,7 @@  struct file *anon_inode_getfile(const char *name,
 				void *priv, int flags);
 int anon_inode_getfd(const char *name, const struct file_operations *fops,
 		     void *priv, int flags);
+struct inode *anon_inode_new(void);
 
 #endif /* _LINUX_ANON_INODES_H */