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Subject[PATCH 2/9] fs: add an argument-less alloc_anon_inode
Date
Add a new alloc_anon_inode helper that allocates an inode on
the anon_inode file system.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/anon_inodes.c | 15 +++++++++++++--
include/linux/anon_inodes.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 4745fc37014332..b6a8ea71920bc3 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -63,7 +63,7 @@ static struct inode *anon_inode_make_secure_inode(
const struct qstr qname = QSTR_INIT(name, strlen(name));
int error;

- inode = alloc_anon_inode_sb(anon_inode_mnt->mnt_sb);
+ inode = alloc_anon_inode();
if (IS_ERR(inode))
return inode;
inode->i_flags &= ~S_PRIVATE;
@@ -225,13 +225,24 @@ int anon_inode_getfd_secure(const char *name, const struct file_operations *fops
}
EXPORT_SYMBOL_GPL(anon_inode_getfd_secure);

+/**
+ * alloc_anon_inode - create a new anonymous inode
+ *
+ * Create an inode on the anon_inode file system and return it.
+ */
+struct inode *alloc_anon_inode(void)
+{
+ return alloc_anon_inode_sb(anon_inode_mnt->mnt_sb);
+}
+EXPORT_SYMBOL_GPL(alloc_anon_inode);
+
static int __init anon_inode_init(void)
{
anon_inode_mnt = kern_mount(&anon_inode_fs_type);
if (IS_ERR(anon_inode_mnt))
panic("anon_inode_init() kernel mount failed (%ld)\n", PTR_ERR(anon_inode_mnt));

- anon_inode_inode = alloc_anon_inode_sb(anon_inode_mnt->mnt_sb);
+ anon_inode_inode = alloc_anon_inode();
if (IS_ERR(anon_inode_inode))
panic("anon_inode_init() inode allocation failed (%ld)\n", PTR_ERR(anon_inode_inode));

diff --git a/include/linux/anon_inodes.h b/include/linux/anon_inodes.h
index 71881a2b6f7860..b5ae9a6eda9923 100644
--- a/include/linux/anon_inodes.h
+++ b/include/linux/anon_inodes.h
@@ -21,6 +21,7 @@ int anon_inode_getfd_secure(const char *name,
const struct file_operations *fops,
void *priv, int flags,
const struct inode *context_inode);
+struct inode *alloc_anon_inode(void);

#endif /* _LINUX_ANON_INODES_H */

--
2.30.1
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