I am running a 2.6.17 uClinux kernel on a Coldfire 5233 and am having an
issue where it appears as though the disk cache is overlaying shared
memory. In the application, I have allocated a 4K block of shared memory
and am writing files to a JFFS2 file system. The Cached data size
continues to grow as I continue to write files until about 1M of RAM is
still available at which point the shared memory block gets overwritten
with part of the data that was just written to JFFS2. This happens
consistently and is easily reproducible. If I am not using shared memory
but just malloc a block of storage instead, no overlay happens and the
cache grows only slightly larger before it levels off as the cache cleans
itself up.
Any ideas why this overlay may be happening?
John Moore
The Morey Corporation
100 Morey Drive
Woodridge, IL 60517-8135
Office Phone: (630) 754-2305
Email: jmo...@moreycorp.com
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