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locks: introduce locks_lock_inode_wait()

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Users of the locks API commonly call either posix_lock_file_wait() or
flock_lock_file_wait() depending upon the lock type.  Add a new function
locks_lock_inode_wait() which will check and call the correct function for
the type of lock passed in.

Signed-off-by: Benjamin Coddington <[email protected]>
Signed-off-by: Jeff Layton <[email protected]>
This commit is contained in:
Benjamin Coddington 2015-10-22 13:38:13 -04:00 • committed by Jeff Layton
commit e55c34a66f
2 changed files with 35 additions and 0 deletions
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24
fs/locks.c
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@ -1881,6 +1881,30 @@ int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl)
}
EXPORT_SYMBOL(flock_lock_inode_wait);
/**
* locks_lock_inode_wait - Apply a lock to an inode
* @inode: inode of the file to apply to
* @fl: The lock to be applied
*
* Apply a POSIX or FLOCK style lock request to an inode.
*/
int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl)
{
int res = 0;
switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
case FL_POSIX:
res = posix_lock_inode_wait(inode, fl);
break;
case FL_FLOCK:
res = flock_lock_inode_wait(inode, fl);
break;
default:
BUG();
}
return res;
}
EXPORT_SYMBOL(locks_lock_inode_wait);
/**
* sys_flock: - flock() system call.
* @fd: the file descriptor to lock.