From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Daniel Vetter <daniel@ffwll.ch>, Nadav Amit <namit@vmware.com>,
"VMware, Inc." <pv-drivers@vmware.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
David Hildenbrand <david@redhat.com>,
Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
Jason Gunthorpe <jgg@nvidia.com>,
Alex Williamson <alex.williamson@redhat.com>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org,
virtualization@lists.linux-foundation.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 2/9] fs: add an argument-less alloc_anon_inode
Date: Tue, 9 Mar 2021 16:53:41 +0100 [thread overview]
Message-ID: <20210309155348.974875-3-hch@lst.de> (raw)
In-Reply-To: <20210309155348.974875-1-hch@lst.de>
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
next prev parent reply other threads:[~2021-03-09 15:55 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 15:53 make alloc_anon_inode more useful Christoph Hellwig
2021-03-09 15:53 ` [PATCH 1/9] fs: rename alloc_anon_inode to alloc_anon_inode_sb Christoph Hellwig
2021-03-09 16:21 ` David Hildenbrand
2021-03-09 19:33 ` Gao Xiang
2021-03-10 6:39 ` Minchan Kim
2021-03-10 8:30 ` Christoph Hellwig
2021-03-10 9:33 ` Christian Brauner
2021-03-09 15:53 ` Christoph Hellwig [this message]
2021-03-09 16:22 ` [PATCH 2/9] fs: add an argument-less alloc_anon_inode David Hildenbrand
2021-03-09 19:34 ` Gao Xiang
2021-03-10 9:35 ` Christian Brauner
2021-03-09 15:53 ` [PATCH 3/9] powerpc/pseries: remove the ppc-cmm file system Christoph Hellwig
2021-03-09 16:26 ` David Hildenbrand
2021-03-09 16:30 ` Jason Gunthorpe
2021-03-10 16:29 ` Al Viro
2021-03-11 8:42 ` Christoph Hellwig
2021-03-09 15:53 ` [PATCH 4/9] drm: remove the drm " Christoph Hellwig
2021-03-10 16:32 ` Al Viro
2021-03-11 8:35 ` Christoph Hellwig
2021-03-09 15:53 ` [PATCH 5/9] vmw_balloon: remove the balloon-vmware " Christoph Hellwig
2021-03-09 16:28 ` David Hildenbrand
2021-03-09 15:53 ` [PATCH 6/9] virtio_balloon: remove the balloon-kvm " Christoph Hellwig
2021-03-09 16:29 ` David Hildenbrand
2021-03-09 15:53 ` [PATCH 7/9] iomem: remove the iomem " Christoph Hellwig
2021-03-14 13:55 ` [iomem] e14497b88f: BUG:KASAN:null-ptr-deref_in_alloc_anon_inode kernel test robot
2021-03-09 15:53 ` [PATCH 8/9] z3fold: remove the z3fold file system Christoph Hellwig
2021-03-09 15:53 ` [PATCH 9/9] zsmalloc: remove the zsmalloc " Christoph Hellwig
2021-03-10 6:44 ` Minchan Kim
2021-03-09 16:54 ` make alloc_anon_inode more useful Jason Gunthorpe
2021-03-10 8:32 ` Christoph Hellwig
2021-03-10 4:05 ` Matthew Wilcox
2021-03-10 8:37 ` Christoph Hellwig
2023-02-03 9:49 ` Jingbo Xu
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