| commit | cdfd88c2377e95b46a8d990de84af1b6ce8c0cd6 | |
| author | Tony Luck <tony.luck@intel.com> | |
| Wed, 30 Jun 2010 17:46:16 +0000 (30 10:46 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 2 Aug 2010 17:30:22 +0000 (2 10:30 -0700) | ||
| tree | d606dc696d8c5ba61804886a10acd83dd6bdd1dd | treesnapshot (tar.gz zip) |
| parent | c1dbd27d6a46adc6e2021d0febfdc3898e383f05 | commitdiff |
Fix spinaphore down_spin()
commit b70f4e85bfc4d7000036355b714a92d5c574f1be upstream.
Typo in down_spin() meant it only read the low 32 bits of the
"serve" value, instead of the full 64 bits. This results in the
system hanging when the values in ticket/serve get larger than
32-bits. A big enough system running the right test can hit this
in a just a few hours.
Broken since 883a3acf5b0d4782ac35981227a0d094e8b44850
[IA64] Re-implement spinaphores using ticket lock concepts
Reported via IRC by Bjorn Helgaas
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit b70f4e85bfc4d7000036355b714a92d5c574f1be upstream.
Typo in down_spin() meant it only read the low 32 bits of the
"serve" value, instead of the full 64 bits. This results in the
system hanging when the values in ticket/serve get larger than
32-bits. A big enough system running the right test can hit this
in a just a few hours.
Broken since 883a3acf5b0d4782ac35981227a0d094e8b44850
[IA64] Re-implement spinaphores using ticket lock concepts
Reported via IRC by Bjorn Helgaas
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| arch/ia64/mm/tlb.c | diffblobblamehistory |