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linux/arch/parisc/include
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Helge Deller c49ffd89b6 parisc: Fix flush_dcache_page() for usage from irq context 
commit 61e150fb31 upstream.

Since at least kernel 6.1, flush_dcache_page() is called with IRQs
disabled, e.g. from aio_complete().

But the current implementation for flush_dcache_page() on parisc
unintentionally re-enables IRQs, which may lead to deadlocks.

Fix it by using xa_lock_irqsave() and xa_unlock_irqrestore()
for the flush_dcache_mmap_*lock() macros instead.

Cc: linux-parisc@vger.kernel.org
Cc: stable@kernel.org # 5.18+
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-05-30 14:03:18 +01:00
..
asm parisc: Fix flush_dcache_page() for usage from irq context 2023-05-30 14:03:18 +01:00
uapi/asm parisc: Align parisc MADV_XXX constants with all other architectures 2023-01-14 10:33:40 +01:00