[Bugs] [Bug 1214168] While running i/o's from cifs mount huge logging errors related to quick_read performance xlator : invalid argument:iobuf

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1214168



--- Comment #3 from Anand Avati <aavati at redhat.com> ---
COMMIT: http://review.gluster.org/10329 committed in release-3.7 by Vijay
Bellur (vbellur at redhat.com) 
------
commit de909177699bdf0e084476e8191834be56edd9b0
Author: Ravishankar N <ravishankar at redhat.com>
Date:   Mon Apr 13 05:47:09 2015 +0000

    quick-read: Do a null check before unref

    Backport of http://review.gluster.org/10206

    Commit 4ea5b8d2046b9e0bc7f24cdf1b2e72ab8b462c9e seems to have removed the
check
    as a part of static analyis fixes but I'm seeing errors in the client log.

    ---------------------
    touch  /mnt/fuse_mnt/zero-byte-file
    echo 3 > /proc/sys/vm/drop_caches
    cat  /mnt/fuse_mnt/zero-byte-file

    mount log:
    [2015-04-13 05:52:21.683256] E [iobuf.c:790:iobuf_unref] (-->
    /usr/local/lib/libglusterfs.so.0(_gf_log_callingfn+0x232)[0x7feda12c0e24]
(-->
    /usr/local/lib/libglusterfs.so.0(iobuf_unref+0x56)[0x7feda1304c8e] (-->
   
/usr/local/lib/glusterfs/3.7dev/xlator/performance/quick-read.so(qr_readv_cached+0x466)[0x7fed95b7e2fc]
    (-->
   
/usr/local/lib/glusterfs/3.7dev/xlator/performance/quick-read.so(qr_readv+0x70)[0x7fed95b7e385]
    (-->
   
/usr/local/lib/libglusterfs.so.0(default_readv_resume+0x270)[0x7feda12d4401]
    ))))) 0-iobuf: invalid argument: iobuf

    ---------------------

    Change-Id: Ia6b29165cdef8783a716fe1e72d3d13bf0220aae
    BUG: 1214168
    Signed-off-by: Ravishankar N <ravishankar at redhat.com>
    Reviewed-on: http://review.gluster.org/10329
    Tested-by: NetBSD Build System
    Reviewed-by: Raghavendra Talur <rtalur at redhat.com>
    Tested-by: Raghavendra Talur <rtalur at redhat.com>
    Reviewed-by: Vijay Bellur <vbellur at redhat.com>

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