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locks: have locks_release_file use flock_lock_file to release generic flock locks 

...instead of open-coding it and removing flock locks directly. This
helps consolidate the flock lock removal logic into a single spot.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
This commit is contained in:
Jeff Layton 2015-01-16 15:05:54 -05:00
parent 6dee60f69d
commit dd459bb197
1 changed files with 31 additions and 18 deletions
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49
fs/locks.c
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@ -2360,6 +2360,30 @@ void locks_remove_posix(struct file *filp, fl_owner_t owner)
EXPORT_SYMBOL(locks_remove_posix);
static void
locks_remove_flock(struct file *filp)
{
struct file_lock fl = {
.fl_owner = filp,
.fl_pid = current->tgid,
.fl_file = filp,
.fl_flags = FL_FLOCK,
.fl_type = F_UNLCK,
.fl_end = OFFSET_MAX,
};
if (!file_inode(filp)->i_flock)
return;
if (filp->f_op->flock)
filp->f_op->flock(filp, F_SETLKW, &fl);
else
flock_lock_file(filp, &fl);
if (fl.fl_ops && fl.fl_ops->fl_release_private)
fl.fl_ops->fl_release_private(&fl);
}
/*
* This function is called on the last close of an open file.
*/
@ -2370,24 +2394,14 @@ void locks_remove_file(struct file *filp)
struct file_lock **before;
LIST_HEAD(dispose);
if (!inode->i_flock)
return;
/* remove any OFD locks */
locks_remove_posix(filp, filp);
if (filp->f_op->flock) {
struct file_lock fl = {
.fl_owner = filp,
.fl_pid = current->tgid,
.fl_file = filp,
.fl_flags = FL_FLOCK,
.fl_type = F_UNLCK,
.fl_end = OFFSET_MAX,
};
filp->f_op->flock(filp, F_SETLKW, &fl);
if (fl.fl_ops && fl.fl_ops->fl_release_private)
fl.fl_ops->fl_release_private(&fl);
}
/* remove flock locks */
locks_remove_flock(filp);
if (!inode->i_flock)
return;
spin_lock(&inode->i_lock);
before = &inode->i_flock;
@ -2407,8 +2421,7 @@ void locks_remove_file(struct file *filp)
* some info about it and then just remove it from
* the list.
*/
WARN(!IS_FLOCK(fl),
"leftover lock: dev=%u:%u ino=%lu type=%hhd flags=0x%x start=%lld end=%lld\n",
WARN(1, "leftover lock: dev=%u:%u ino=%lu type=%hhd flags=0x%x start=%lld end=%lld\n",
MAJOR(inode->i_sb->s_dev),
MINOR(inode->i_sb->s_dev), inode->i_ino,
fl->fl_type, fl->fl_flags,