staging: lustre: return +ve for blocked lnet message

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returned value of lnet_post_send_locked and
lnet_post_routed_recv_locked are changed to -ve by:
http://review.whamcloud.com/#/c/9369/

this is wrong because callers rely on +ve to identify blocked
message which is not a failure.

To respect linux kernel coding style and not use positive error
code, this patch adds two macros as non-error returned values of
these functions:
    LNET_CREDIT_OK    has credit for message
    LNET_CREDIT_WAIT  no credit and message is blocked

both these functions will return these two values instead of 0
and EAGAIN

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5151
Reviewed-on: http://review.whamcloud.com/10625
Reviewed-by: Chris Horn <hornc@cray.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Liang Zhen 2016-02-15 10:25:50 -05:00 • committed by Greg Kroah-Hartman

parent 060c2820d0

commit ec5fb5be77

1 changed files with 31 additions and 19 deletions

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drivers/staging/lustre/lnet/lnet/lib-move.c

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