Messages in this thread | | | Subject | Re: cramfs b0rken on HIGHMEM machines | Date | Thu, 22 Mar 2001 12:13:42 +0000 (GMT) | From | Alan Cox <> |
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> just look at fs/cramfs/inode.c:cramfs_read_page() > It uses page_address instead of kmap(). > > I would have fixed it myself, but I don't know, how I should > kunmap() it, once we have memory pressure.
Take a look at ramfs. kmap isnt really a 'pressure' thing. You want to kunmap the page as soon as you can. The kmap/unmap operations are fairly fast but there is a limited pool of maps.
Alan
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