From: Al Viro <viro@ZenIV.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC][PATCH 22/27] anon_inode_getfile(): switch to alloc_file_pseudo()
Date: Mon, 9 Jul 2018 05:54:12 +0100 [thread overview]
Message-ID: <20180709045417.13988-22-viro@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20180709045417.13988-1-viro@ZenIV.linux.org.uk>
From: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/anon_inodes.c | 29 ++++++-----------------------
1 file changed, 6 insertions(+), 23 deletions(-)
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index bf952939a1d3..7e13edd23db1 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -71,8 +71,6 @@ struct file *anon_inode_getfile(const char *name,
const struct file_operations *fops,
void *priv, int flags)
{
- struct qstr this;
- struct path path;
struct file *file;
if (IS_ERR(anon_inode_inode))
@@ -82,29 +80,15 @@ struct file *anon_inode_getfile(const char *name,
return ERR_PTR(-ENOENT);
/*
- * Link the inode to a directory entry by creating a unique name
- * using the inode sequence number.
- */
- file = ERR_PTR(-ENOMEM);
- this.name = name;
- this.len = strlen(name);
- this.hash = 0;
- path.dentry = d_alloc_pseudo(anon_inode_mnt->mnt_sb, &this);
- if (!path.dentry)
- goto err_module;
-
- path.mnt = mntget(anon_inode_mnt);
- /*
* We know the anon_inode inode count is always greater than zero,
* so ihold() is safe.
*/
ihold(anon_inode_inode);
-
- d_instantiate(path.dentry, anon_inode_inode);
-
- file = alloc_file(&path, OPEN_FMODE(flags) | FMODE_OPENED, fops);
+ file = alloc_file_pseudo(anon_inode_inode, anon_inode_mnt, name,
+ OPEN_FMODE(flags), fops);
if (IS_ERR(file))
- goto err_dput;
+ goto err;
+
file->f_mapping = anon_inode_inode->i_mapping;
file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
@@ -112,9 +96,8 @@ struct file *anon_inode_getfile(const char *name,
return file;
-err_dput:
- path_put(&path);
-err_module:
+err:
+ iput(anon_inode_inode);
module_put(fops->owner);
return file;
}
--
2.11.0
next prev parent reply other threads:[~2018-07-09 4:55 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-09 4:53 [RFC][PATCHES] open()-related cleanups Al Viro
2018-07-09 4:53 ` [RFC][PATCH 01/27] drm_mode_create_lease_ioctl(): fix open-coded filp_clone_open() Al Viro
2018-07-09 4:53 ` [RFC][PATCH 02/27] cxl_getfile(): fix double-iput() on alloc_file() failures Al Viro
2018-07-09 4:53 ` [RFC][PATCH 03/27] ocxlflash_getfile(): " Al Viro
2018-07-09 4:53 ` [RFC][PATCH 04/27] make sure do_dentry_open() won't return positive as an error Al Viro
2018-07-09 4:53 ` [RFC][PATCH 05/27] introduce FMODE_OPENED Al Viro
2018-07-09 4:53 ` [RFC][PATCH 06/27] get rid of 'opened' argument of finish_open() Al Viro
2018-07-09 4:53 ` [RFC][PATCH 07/27] lift fput() on late failures into path_openat() Al Viro
2018-07-09 4:53 ` [RFC][PATCH 08/27] switch all remaining checks for FILE_OPENED to FMODE_OPENED Al Viro
2018-07-09 4:53 ` [RFC][PATCH 09/27] now we can fold open_check_o_direct() into do_dentry_open() Al Viro
2018-07-09 4:54 ` [RFC][PATCH 10/27] introduce FMODE_CREATED and switch to it Al Viro
2018-07-09 4:54 ` [RFC][PATCH 11/27] IMA: don't propagate opened through the entire thing Al Viro
2018-07-09 4:54 ` [RFC][PATCH 12/27] Preparation to killing ->atomic_open() 'opened' argument Al Viro
2018-07-09 4:54 ` [RFC][PATCH 13/27] get rid of 'opened' argument of ->atomic_open() Al Viro
2018-07-09 4:54 ` [RFC][PATCH 14/27] get rid of 'opened' in path_openat() and the helpers downstream Al Viro
2018-07-09 4:54 ` [RFC][PATCH 15/27] kill FILE_{CREATED,OPENED} Al Viro
2018-07-09 4:54 ` [RFC][PATCH 16/27] new wrapper: alloc_file_pseudo() Al Viro
2018-07-09 4:54 ` [RFC][PATCH 17/27] __shmem_file_setup(): reorder allocations Al Viro
2018-07-09 4:54 ` [RFC][PATCH 18/27] ... and switch shmem_file_setup() to alloc_file_pseudo() Al Viro
2018-07-09 4:54 ` [RFC][PATCH 19/27] cxl_getfile(): switch " Al Viro
2018-07-09 4:54 ` [RFC][PATCH 20/27] ocxlflash_getfile(): " Al Viro
2018-07-09 4:54 ` [RFC][PATCH 21/27] hugetlb_file_setup(): " Al Viro
2018-07-09 4:54 ` Al Viro [this message]
2018-07-09 4:54 ` [RFC][PATCH 23/27] create_pipe_files(): switch the first allocation " Al Viro
2018-07-09 4:54 ` [RFC][PATCH 24/27] new helper: alloc_file_clone() Al Viro
2018-07-09 4:54 ` [RFC][PATCH 25/27] do_shmat(): grab shp->shm_file earlier, switch to alloc_file_clone() Al Viro
2018-07-09 4:54 ` [RFC][PATCH 26/27] make alloc_file() static Al Viro
2018-07-09 4:54 ` [RFC][PATCH 27/27] turn filp_clone_open() into inline wrapper for dentry_open() Al Viro
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