Files
linux-stable-mirror/include/linux
Jeff Layton 516fac1e07 filelock: new helper: vfs_inode_has_locks
[ Upstream commit ab1ddef98a ]

Ceph has a need to know whether a particular inode has any locks set on
it. It's currently tracking that by a num_locks field in its
filp->private_data, but that's problematic as it tries to decrement this
field when releasing locks and that can race with the file being torn
down.

Add a new vfs_inode_has_locks helper that just returns whether any locks
are currently held on the inode.

Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Stable-dep-of: 461ab10ef7 ("ceph: switch to vfs_inode_has_locks() to fix file lock bug")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-12 12:02:22 +01:00
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