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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-09-28 11:41:51 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-09-28 18:06:21 +0100
commitaa45ee8fc0ee87c1711b5fe8eb3556d06530c39e (patch)
tree4fd5a65dd1dda67ba8e2c4857bf1c7f5c19edaf8 /Documentation/namespaces
parent90140c30a7b8c77e8872a389d48678d78e58789f (diff)
ARM: Ensure do_cache_op takes mmap_sem
do_cache_op() uses find_vma() to validate its arguments without holding any locking. This means that the VMA could vanish beneath us. Fix this by taking a read lock on mmap_sem. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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