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switch alloc_file() to passing struct path

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... and have the caller grab both mnt and dentry; kill
leak in infiniband, while we are at it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2009-08-09 00:52:35 +04:00
parent a95161aaa8
commit 2c48b9c455
11 changed files with 78 additions and 63 deletions
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14
mm/shmem.c
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@@ -2626,7 +2626,8 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
int error;
struct file *file;
struct inode *inode;
struct dentry *dentry, *root;
struct path path;
struct dentry *root;
struct qstr this;
if (IS_ERR(shm_mnt))
@@ -2643,16 +2644,17 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
this.len = strlen(name);
this.hash = 0; /* will go */
root = shm_mnt->mnt_root;
dentry = d_alloc(root, &this);
if (!dentry)
path.dentry = d_alloc(root, &this);
if (!path.dentry)
goto put_memory;
path.mnt = mntget(shm_mnt);
error = -ENOSPC;
inode = shmem_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0, flags);
if (!inode)
goto put_dentry;
d_instantiate(dentry, inode);
d_instantiate(path.dentry, inode);
inode->i_size = size;
inode->i_nlink = 0; /* It is unlinked */
#ifndef CONFIG_MMU
@@ -2662,7 +2664,7 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
#endif
error = -ENFILE;
file = alloc_file(shm_mnt, dentry, FMODE_WRITE | FMODE_READ,
file = alloc_file(&path, FMODE_WRITE | FMODE_READ,
&shmem_file_operations);
if (!file)
goto put_dentry;
@@ -2671,7 +2673,7 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
return file;
put_dentry:
dput(dentry);
path_put(&path);
put_memory:
shmem_unacct_size(flags, size);
return ERR_PTR(error);