From 93dec2da7b2349f0b294bbb23244cac135f13b79 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 8 Jul 2018 23:02:03 -0400 Subject: ... and switch shmem_file_setup() to alloc_file_pseudo() Acked-by: Linus Torvalds Signed-off-by: Al Viro --- mm/shmem.c | 37 +++++++------------------------------ 1 file changed, 7 insertions(+), 30 deletions(-) (limited to 'mm') diff --git a/mm/shmem.c b/mm/shmem.c index 35aabed7d64d..d7e984141be5 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3896,18 +3896,11 @@ EXPORT_SYMBOL_GPL(shmem_truncate_range); /* common code */ -static const struct dentry_operations anon_ops = { - .d_dname = simple_dname -}; - static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, loff_t size, unsigned long flags, unsigned int i_flags) { - struct file *res; struct inode *inode; - struct path path; - struct super_block *sb; - struct qstr this; + struct file *res; if (IS_ERR(mnt)) return ERR_CAST(mnt); @@ -3918,8 +3911,8 @@ static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, l if (shmem_acct_size(flags, size)) return ERR_PTR(-ENOMEM); - sb = mnt->mnt_sb; - inode = shmem_get_inode(sb, NULL, S_IFREG | S_IRWXUGO, 0, flags); + inode = shmem_get_inode(mnt->mnt_sb, NULL, S_IFREG | S_IRWXUGO, 0, + flags); if (unlikely(!inode)) { shmem_unacct_size(flags, size); return ERR_PTR(-ENOSPC); @@ -3928,27 +3921,11 @@ static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, l inode->i_size = size; clear_nlink(inode); /* It is unlinked */ res = ERR_PTR(ramfs_nommu_expand_for_mapping(inode, size)); - if (IS_ERR(res)) { - iput(inode); - return res; - } - - this.name = name; - this.len = strlen(name); - this.hash = 0; /* will go */ - path.mnt = mntget(mnt); - path.dentry = d_alloc_pseudo(sb, &this); - if (!path.dentry) { - iput(inode); - return ERR_PTR(-ENOMEM); - } - d_set_d_op(path.dentry, &anon_ops); - - d_instantiate(path.dentry, inode); - - res = alloc_file(&path, O_RDWR, &shmem_file_operations); + if (!IS_ERR(res)) + res = alloc_file_pseudo(inode, mnt, name, O_RDWR, + &shmem_file_operations); if (IS_ERR(res)) - path_put(&path); + iput(inode); return res; } -- cgit v1.2.3