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locks: Set FL_CLOSE when removing flock locks on close()

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Set FL_CLOSE in fl_flags as in locks_remove_posix() when clearing locks.
NFS will check for this flag to ensure an unlock is sent in a following
patch.

Fuse handles flock and posix locks differently for FL_CLOSE, and so
requires a fixup to retain the existing behavior for flock.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Benjamin Coddington 2017-04-11 12:50:09 -04:00 committed by Trond Myklebust
parent e12937279c
commit 50f2112cf7
3 changed files with 4 additions and 2 deletions
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2
fs/fuse/file.c
View File

@ -2168,7 +2168,7 @@ static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
}
/* Unlock on close is handled by the flush method */
if (fl->fl_flags & FL_CLOSE)
if ((fl->fl_flags & FL_CLOSE_POSIX) == FL_CLOSE_POSIX)
return 0;
fuse_lk_fill(&args, file, fl, opcode, pid, flock, &inarg);

2
fs/locks.c
View File

@ -2504,7 +2504,7 @@ locks_remove_flock(struct file *filp, struct file_lock_context *flctx)
.fl_owner = filp,
.fl_pid = current->tgid,
.fl_file = filp,
.fl_flags = FL_FLOCK,
.fl_flags = FL_FLOCK | FL_CLOSE,
.fl_type = F_UNLCK,
.fl_end = OFFSET_MAX,
};

2
include/linux/fs.h
View File

@ -909,6 +909,8 @@ static inline struct file *get_file(struct file *f)
#define FL_OFDLCK 1024 /* lock is "owned" by struct file */
#define FL_LAYOUT 2048 /* outstanding pNFS layout */
#define FL_CLOSE_POSIX (FL_POSIX | FL_CLOSE)
/*
* Special return value from posix_lock_file() and vfs_lock_file() for
* asynchronous locking.