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locks: fix setlease methods to free passed-in lock

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We modified setlease to require the caller to allocate the new lease in
the case of creating a new lease, but forgot to fix up the filesystem
methods.

Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Steve French <sfrench@samba.org>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
J. Bruce Fields 2010-10-30 17:31:15 -04:00 committed by Linus Torvalds
parent 096657b65e
commit 05fa3135fd
5 changed files with 11 additions and 3 deletions
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5
fs/cifs/cifsfs.c
View file

@ -625,8 +625,11 @@ static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
knows that the file won't be changed on the server
by anyone else */
return generic_setlease(file, arg, lease);
else
else {
if (arg != F_UNLCK)
locks_free_lock(*lease);
return -EAGAIN;
}
}
struct file_system_type cifs_fs_type = {

2
fs/gfs2/file.c
View file

@ -629,6 +629,8 @@ static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
static int gfs2_setlease(struct file *file, long arg, struct file_lock **fl)
{
if (arg != F_UNLCK)
locks_free_lock(*fl);
return -EINVAL;
}

3
fs/locks.c
View file

@ -186,7 +186,7 @@ void locks_release_private(struct file_lock *fl)
EXPORT_SYMBOL_GPL(locks_release_private);
/* Free a lock which is not in use. */
static void locks_free_lock(struct file_lock *fl)
void locks_free_lock(struct file_lock *fl)
{
BUG_ON(waitqueue_active(&fl->fl_wait));
BUG_ON(!list_empty(&fl->fl_block));
@ -195,6 +195,7 @@ static void locks_free_lock(struct file_lock *fl)
locks_release_private(fl);
kmem_cache_free(filelock_cache, fl);
}
EXPORT_SYMBOL(locks_free_lock);
void locks_init_lock(struct file_lock *fl)
{

3
fs/nfs/file.c
View file

@ -884,6 +884,7 @@ static int nfs_setlease(struct file *file, long arg, struct file_lock **fl)
dprintk("NFS: setlease(%s/%s, arg=%ld)\n",
file->f_path.dentry->d_parent->d_name.name,
file->f_path.dentry->d_name.name, arg);
if (arg != F_UNLCK)
locks_free_lock(*fl);
return -EINVAL;
}

1
include/linux/fs.h
View file

@ -1129,6 +1129,7 @@ extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
extern int fcntl_getlease(struct file *filp);
/* fs/locks.c */
void locks_free_lock(struct file_lock *fl);
extern void locks_init_lock(struct file_lock *);
extern struct file_lock * locks_alloc_lock(void);
extern void locks_copy_lock(struct file_lock *, struct file_lock *);