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| author | Helge Deller <deller@gmx.de> | 2023-08-22 16:27:49 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-24 16:20:31 -0700 |
| commit | 7db15418d390cf878d7c77ae08a4ad39f1534bc5 (patch) | |
| tree | 89c0d1cdfd00afdb004e131d62b03fd86480d310 /mm/gup.c | |
| parent | 8cfd014efd93e9450fcd4892bbfe8b10f41e53c3 (diff) | |
| download | linux-7db15418d390cf878d7c77ae08a4ad39f1534bc5.tar.gz linux-7db15418d390cf878d7c77ae08a4ad39f1534bc5.tar.bz2 linux-7db15418d390cf878d7c77ae08a4ad39f1534bc5.zip | |
nios2: fix flush_dcache_page() for usage from irq context
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 NIOS2
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.
Link: https://lkml.kernel.org/r/ZOTF5WWURQNH9+iw@p100
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
0 files changed, 0 insertions, 0 deletions