linux-kernel - [PATCH 1/4] fs/anon_inodes: new interface to create new inode

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Message-Id: <1436776519-17337-2-git-send-email-gioh.kim@lge.com>
Date:	Mon, 13 Jul 2015 17:35:16 +0900
From:	Gioh Kim <gioh.kim@....com>
To:	jlayton@...chiereds.net, bfields@...ldses.org, vbabka@...e.cz,
	iamjoonsoo.kim@....com, viro@...iv.linux.org.uk, mst@...hat.com,
	koct9i@...il.com, minchan@...nel.org, aquini@...hat.com,
	linux-fsdevel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	linux-mm@...ck.org
Cc:	dri-devel@...ts.freedesktop.org, akpm@...ux-foundation.org,
	Gioh Kim <gurugio@...mail.net>, Gioh Kim <gioh.kim@....com>
Subject: [PATCH 1/4] fs/anon_inodes: new interface to create new inode

From: Gioh Kim <gurugio@...mail.net>

The anon_inodes has already complete interfaces to create manage
many anonymous inodes but don't have interface to get
new inode. Other sub-modules can create anonymous inode
without creating and mounting it's own pseudo filesystem.

Signed-off-by: Gioh Kim <gioh.kim@....com>
Acked-by: Rafael Aquini <aquini@...hat.com>
---
 fs/anon_inodes.c            | 6 ++++++
 include/linux/anon_inodes.h | 1 +
 2 files changed, 7 insertions(+)

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 */
 
-- 
2.1.4

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