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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2017-09-21 17:21:40 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2017-11-06 19:24:35 +0100 |
| commit | 94e2cc4dba39efbb63e84cd4f7243627c16ceac5 (patch) | |
| tree | 175fe887e65dc3029129904b2130ace1b23ebb70 /fs/direct-io.c | |
| parent | Merge branches 'iommu/fixes', 'arm/omap', 'arm/exynos', 'x86/amd', 'x86/vt-d'... (diff) | |
| download | linux-94e2cc4dba39efbb63e84cd4f7243627c16ceac5.tar.xz linux-94e2cc4dba39efbb63e84cd4f7243627c16ceac5.zip | |
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/direct-io.c')
0 files changed, 0 insertions, 0 deletions