[PATCH 2/9] fs: add an argument-less alloc_anon_inode
David Hildenbrand
david at redhat.com
Tue Mar 9 16:22:45 UTC 2021
On 09.03.21 16:53, Christoph Hellwig wrote:
> Add a new alloc_anon_inode helper that allocates an inode on
> the anon_inode file system.
>
> Signed-off-by: Christoph Hellwig <hch at 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 */
>
>
Reviewed-by: David Hildenbrand <david at redhat.com>
--
Thanks,
David / dhildenb
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