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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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17
fs/pipe.c
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@ -974,7 +974,7 @@ struct file *create_write_pipe(int flags)
int err;
struct inode *inode;
struct file *f;
struct dentry *dentry;
struct path path;
struct qstr name = { .name = "" };
err = -ENFILE;
@ -983,21 +983,22 @@ struct file *create_write_pipe(int flags)
goto err;
err = -ENOMEM;
dentry = d_alloc(pipe_mnt->mnt_sb->s_root, &name);
if (!dentry)
path.dentry = d_alloc(pipe_mnt->mnt_sb->s_root, &name);
if (!path.dentry)
goto err_inode;
path.mnt = mntget(pipe_mnt);
dentry->d_op = &pipefs_dentry_operations;
path.dentry->d_op = &pipefs_dentry_operations;
/*
* We dont want to publish this dentry into global dentry hash table.
* We pretend dentry is already hashed, by unsetting DCACHE_UNHASHED
* This permits a working /proc/$pid/fd/XXX on pipes
*/
dentry->d_flags &= ~DCACHE_UNHASHED;
d_instantiate(dentry, inode);
path.dentry->d_flags &= ~DCACHE_UNHASHED;
d_instantiate(path.dentry, inode);
err = -ENFILE;
f = alloc_file(pipe_mnt, dentry, FMODE_WRITE, &write_pipefifo_fops);
f = alloc_file(&path, FMODE_WRITE, &write_pipefifo_fops);
if (!f)
goto err_dentry;
f->f_mapping = inode->i_mapping;
@ -1009,7 +1010,7 @@ struct file *create_write_pipe(int flags)
err_dentry:
free_pipe_info(inode);
dput(dentry);
path_put(&path);
return ERR_PTR(err);
err_inode: