Martin Langhoff wrote: > On Tue, Jul 7, 2009 at 2:06 AM, Benjamin M. > Schwartz<[email protected]> wrote: >> Is this (a) a kernel bug, (b) Python layering extra caching over mmap, or >> (c) a misunderstanding of mmap on my part? > > money is b
huh. I looked through python's mmap implementation [1] and there doesn't seem to be any caching or funny business going on. I wonder if it could be over-aggressive caching somewhere in jffs2, in an attempt to avoid repeatedly decompressing the same block. --Ben [1] http://svn.python.org/projects/python/trunk/Modules/mmapmodule.c P.S. JFFS2 appears to support read-only mmap, which I presume is what you're using.
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