ceph: cleanup return error of try_get_cap_refs()

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Returns 0 if caps were not able to be acquired (yet), 1 if cap
acquisition succeeded, or a negative error code. There are 3 special
error codes:

-EAGAIN: need to sleep but non-blocking is specified
-EFBIG:  ask caller to call check_max_size() and try again.
-ESTALE: ask caller to call ceph_renew_caps() and try again.

[ jlayton: add WARN_ON_ONCE check for -EAGAIN ]

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

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Yan, Zheng 2020-03-10 19:34:18 +08:00 • committed by Ilya Dryomov

parent c6d5029603

commit 546d402085

1 changed files with 15 additions and 11 deletions

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fs/ceph/caps.c

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