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Diffstat (limited to 'fs/locks.c')
-rw-r--r--fs/locks.c46
1 files changed, 15 insertions, 31 deletions
diff --git a/fs/locks.c b/fs/locks.c
index ca28e0e50e56..b134eaefd7d6 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -425,21 +425,9 @@ static inline int flock_translate_cmd(int cmd) {
}
/* Fill in a file_lock structure with an appropriate FLOCK lock. */
-static struct file_lock *
-flock_make_lock(struct file *filp, unsigned int cmd, struct file_lock *fl)
+static void flock_make_lock(struct file *filp, struct file_lock *fl, int type)
{
- int type = flock_translate_cmd(cmd);
-
- if (type < 0)
- return ERR_PTR(type);
-
- if (fl == NULL) {
- fl = locks_alloc_lock();
- if (fl == NULL)
- return ERR_PTR(-ENOMEM);
- } else {
- locks_init_lock(fl);
- }
+ locks_init_lock(fl);
fl->fl_file = filp;
fl->fl_owner = filp;
@@ -447,8 +435,6 @@ flock_make_lock(struct file *filp, unsigned int cmd, struct file_lock *fl)
fl->fl_flags = FL_FLOCK;
fl->fl_type = type;
fl->fl_end = OFFSET_MAX;
-
- return fl;
}
static int assign_type(struct file_lock *fl, long type)
@@ -2097,10 +2083,9 @@ EXPORT_SYMBOL(locks_lock_inode_wait);
*/
SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int, cmd)
{
+ int can_sleep, error, unlock, type;
struct fd f = fdget(fd);
- struct file_lock *lock;
- int can_sleep, unlock;
- int error;
+ struct file_lock fl;
error = -EBADF;
if (!f.file)
@@ -2127,28 +2112,27 @@ SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int, cmd)
goto out_putf;
}
- lock = flock_make_lock(f.file, cmd, NULL);
- if (IS_ERR(lock)) {
- error = PTR_ERR(lock);
+ type = flock_translate_cmd(cmd);
+ if (type < 0) {
+ error = type;
goto out_putf;
}
+ flock_make_lock(f.file, &fl, type);
+
if (can_sleep)
- lock->fl_flags |= FL_SLEEP;
+ fl.fl_flags |= FL_SLEEP;
- error = security_file_lock(f.file, lock->fl_type);
+ error = security_file_lock(f.file, fl.fl_type);
if (error)
- goto out_free;
+ goto out_putf;
if (f.file->f_op->flock)
error = f.file->f_op->flock(f.file,
(can_sleep) ? F_SETLKW : F_SETLK,
- lock);
+ &fl);
else
- error = locks_lock_file_wait(f.file, lock);
-
- out_free:
- locks_free_lock(lock);
+ error = locks_lock_file_wait(f.file, &fl);
out_putf:
fdput(f);
@@ -2614,7 +2598,7 @@ locks_remove_flock(struct file *filp, struct file_lock_context *flctx)
if (list_empty(&flctx->flc_flock))
return;
- flock_make_lock(filp, LOCK_UN, &fl);
+ flock_make_lock(filp, &fl, F_UNLCK);
fl.fl_flags |= FL_CLOSE;
if (filp->f_op->flock)