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SubjectRe: ISSUE: Writing to mmap creates duplicate pages in 2.2.5 and 2.2.11 kernels
Some additional data points:

The duplication only occurs if O_APPEND is in effect.

If the file is closed and reopened without O_APPEND,
or if the file is mapped via a second descriptor opened
without O_APPEND, there is no duplication.

This is with 2.2.12-final3 on RH6.0.

Bill Rugolsky
rugolsky@ead.dsa.com

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