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List:       hurd-commit
Subject:    [SCM] Hurd branch, master, updated. v0.5-499-g7ca4c02
From:       Samuel Thibault <samuel.thibault () ens-lyon ! org>
Date:       2014-11-27 18:09:24
Message-ID: E1Xu3VM-0001OC-3V () vcs ! savannah ! gnu ! org
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The branch, master has been updated
       via  7ca4c02513d7c6998d9c92dafb3c0fcbe8d6dd6d (commit)
       via  b69b9c28b6628c7d736476d075d56ae137afd343 (commit)
      from  9cd99ff80c3c129ed137e0d22b7e438f292e5e8f (commit)

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- Log -----------------------------------------------------------------
commit 7ca4c02513d7c6998d9c92dafb3c0fcbe8d6dd6d
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Nov 27 19:05:57 2014 +0100

    Add atomicity support to fshelp_acquire_lock
    
    This adds support for the __LOCK_ATOMIC flag which requests atomicity of SH->EX
    upgrades and EX->SH downgrades.
    
    * libfshelp/lock-acquire.c (__LOCK_ATOMIC): New macro
    (fshelp_acquire_lock): When __LOCK_ATOMIC is set, do not release the
    lock early, change the lock hold atomically instead. On upgrade to LOCK_EX,
    prevent new shared locks from being acquired to avoid starvation.

commit b69b9c28b6628c7d736476d075d56ae137afd343
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Nov 27 01:24:43 2014 +0100

    Fix proc crashes
    
    * proc/notify.c (do_mach_notify_dead_name): When `pi' is NULL,
    immediately return EOPNOTSUPP.

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

Summary of changes:
 libfshelp/lock-acquire.c |   95 +++++++++++++++++++++++++++++++++++++---------
 proc/notify.c            |    6 ++-
 2 files changed, 81 insertions(+), 20 deletions(-)


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