Linux-kernel mailing list archive 2000-32,: point of contact between pages and =?ISO-8859-1?Q?buffers=3F=1A?=

# point of contact between pages and =?ISO-8859-1?Q?buffers=3F=1A?=

Chris Quinn (cq@htec.demon.co.uk)
Wed, 09 Aug 2000 11:10:00 +0100

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Will someone kindly clarify a point regarding memory managment for me?
When a mmap()ed page is modified are it's constituent BUFSIZ parts
then made members of the buffer cache? I ask because a new process that
comes along immediately after the modification before a flush to disk
sees the change via a read(). So there is sharing but I read in the TLK
that data cannot be in both the buffer and page caches!? Where is the point of sharing?

Cheers,

    --
    Chris Quinn

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