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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2010-12-15 15:14:45 -0500 |
|---|---|---|
| committer | Nicolas Pitre <nico@fluxnic.net> | 2010-12-19 12:56:46 -0500 |
| commit | 39af22a79232373764904576f31572f1db76af10 (patch) | |
| tree | 20d31ab6a01b93dabe9c05277bcb1413e978648b /arch/arm/mm/flush.c | |
| parent | b0c3844d8af6b9f3f18f31e1b0502fbefa2166be (diff) | |
| download | linux-39af22a79232373764904576f31572f1db76af10.tar.gz linux-39af22a79232373764904576f31572f1db76af10.tar.bz2 linux-39af22a79232373764904576f31572f1db76af10.zip | |
ARM: get rid of kmap_high_l1_vipt()
Since commit 3e4d3af501 "mm: stack based kmap_atomic()", it is no longer
necessary to carry an ad hoc version of kmap_atomic() added in commit
7e5a69e83b "ARM: 6007/1: fix highmem with VIPT cache and DMA" to cope
with reentrancy.
In fact, it is now actively wrong to rely on fixed kmap type indices
(namely KM_L1_CACHE) as kmap_atomic() totally ignores them now and a
concurrent instance of it may reuse any slot for any purpose.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch/arm/mm/flush.c')
| -rw-r--r-- | arch/arm/mm/flush.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 391ffae75098..c29f2839f1d2 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/mm.h> #include <linux/pagemap.h> +#include <linux/highmem.h> #include <asm/cacheflush.h> #include <asm/cachetype.h> @@ -180,10 +181,10 @@ void __flush_dcache_page(struct address_space *mapping, struct page *page) __cpuc_flush_dcache_area(addr, PAGE_SIZE); kunmap_high(page); } else if (cache_is_vipt()) { - pte_t saved_pte; - addr = kmap_high_l1_vipt(page, &saved_pte); + /* unmapped pages might still be cached */ + addr = kmap_atomic(page); __cpuc_flush_dcache_area(addr, PAGE_SIZE); - kunmap_high_l1_vipt(page, saved_pte); + kunmap_atomic(addr); } } |