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authorJeff Layton <jlayton@kernel.org>2020-04-03 13:09:07 -0400
committerIlya Dryomov <idryomov@gmail.com>2020-06-01 13:22:53 +0200
commit829ad4db952aac86d11a62647d2516ab46c2fcd2 (patch)
tree3ff8e570a00668a6e17a0f27d3b5ced8a4dd4089 /fs/qnx4
parentd67c72e6cce99eab5ab9d62c599e33e5141ff8b4 (diff)
downloadlinux-829ad4db952aac86d11a62647d2516ab46c2fcd2.tar.bz2
ceph: ceph_kick_flushing_caps needs the s_mutex
The mdsc->cap_dirty_lock is not held while walking the list in ceph_kick_flushing_caps, which is not safe. ceph_early_kick_flushing_caps does something similar, but the s_mutex is held while it's called and I think that guards against changes to the list. Ensure we hold the s_mutex when calling ceph_kick_flushing_caps, and add some clarifying comments. Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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