[Bugs] [Bug 1297373] [write-behind] : Write/Append to a full volume causes fuse client to crash

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1297373



--- Comment #5 from Vijay Bellur <vbellur at redhat.com> ---
COMMIT: http://review.gluster.org/13213 committed in master by Raghavendra G
(rgowdapp at redhat.com) 
------
commit 1b9174d35dc113f97fd5cec811633853cef269f3
Author: Raghavendra G <rgowdapp at redhat.com>
Date:   Mon Jan 11 16:17:29 2016 +0530

    performance/write-behind: fix memory corruption

    1. while handling short writes, __wb_fulfill_short_write would've freed
       current request before moving on to next in the list if request is not
       big enough to accomodate completed number of bytes. So, make sure to
       save next member before invoking __wb_fulfill_short_write on current
       request. Also handle the case where request is exactly the size of
       remaining completed number of bytes.

    2. When write request is unwound because there is a conflicting failed
       liability, make sure its deleted from tempted list. Otherwise there
       will be two unwinds (one as part handling a failed request in
       wb_do_winds and another in wb_do_unwinds).

    Change-Id: Id1b54430796b19b956d24b8d99ab0cdd5140e4f6
    BUG: 1297373
    Signed-off-by: Raghavendra G <rgowdapp at redhat.com>
    Reviewed-on: http://review.gluster.org/13213
    Tested-by: NetBSD Build System <jenkins at build.gluster.org>
    Reviewed-by: Raghavendra Talur <rtalur at redhat.com>

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