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ARM: remove unnecessary cache flush 

This cache flush occurs when we first insert a page into the page
tables, where a page did not exist previously.  There can be no
cache lines associated with this virtual mapping, so this cache
flush is redundant.

Tested-by: Mike Rapoport <mike@compulab.co.il>
Tested-by: Mikael Pettersson <mikpe at it.uu.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2009-12-24 12:57:01 +00:00
parent 6e8699f7d6
commit f76348a360
1 changed files with 0 additions and 2 deletions
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2
arch/arm/mm/fault-armv.c
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@ -133,8 +133,6 @@ make_coherent(struct address_space *mapping, struct vm_area_struct *vma,
flush_dcache_mmap_unlock(mapping); flush_dcache_mmap_unlock(mapping);
if (aliases) if (aliases)
do_adjust_pte(vma, addr, pfn, ptep); do_adjust_pte(vma, addr, pfn, ptep);
else
flush_cache_page(vma, addr, pfn);
} }
/* /*