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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2017-09-21 17:21:40 +0200
committerAlex Williamson <alex.williamson@redhat.com>2017-11-06 19:24:35 +0100
commit94e2cc4dba39efbb63e84cd4f7243627c16ceac5 (patch)
tree175fe887e65dc3029129904b2130ace1b23ebb70 /fs/ext4/ext4.h
parentMerge branches 'iommu/fixes', 'arm/omap', 'arm/exynos', 'x86/amd', 'x86/vt-d'... (diff)
downloadlinux-94e2cc4dba39efbb63e84cd4f7243627c16ceac5.tar.xz
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iommu/iova: Use raw_cpu_ptr() instead of get_cpu_ptr() for ->fq
get_cpu_ptr() disabled preemption and returns the ->fq object of the current CPU. raw_cpu_ptr() does the same except that it not disable preemption which means the scheduler can move it to another CPU after it obtained the per-CPU object. In this case this is not bad because the data structure itself is protected with a spin_lock. This change shouldn't matter however on RT it does because the sleeping lock can't be accessed with disabled preemption. Cc: Joerg Roedel <joro@8bytes.org> Cc: iommu@lists.linux-foundation.org Reported-by: vinadhy@gmail.com Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'fs/ext4/ext4.h')
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