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authorJohannes Weiner <hannes@cmpxchg.org>2015-06-10 20:14:54 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-11 01:43:43 +0200
commitf371763a79d5212c2cb216b46fa8af46ba56cee3 (patch)
tree05901da392e1cd5b2c837e6709c7d262a5012ae9 /drivers/crypto
parentcheckpatch: fix "GLOBAL_INITIALISERS" test (diff)
downloadlinux-f371763a79d5212c2cb216b46fa8af46ba56cee3.tar.xz
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mm: memcontrol: fix false-positive VM_BUG_ON() on -rt
On -rt, the VM_BUG_ON(!irqs_disabled()) triggers inside the memcg swapout path because the spin_lock_irq(&mapping->tree_lock) in the caller doesn't actually disable the hardware interrupts - which is fine, because on -rt the tophalves run in process context and so we are still safe from preemption while updating the statistics. Remove the VM_BUG_ON() but keep the comment of what we rely on. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-by: Clark Williams <williams@redhat.com> Cc: Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/crypto')
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