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9p: soften invalidation in loose_mode
authorEric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com>
Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)
committerEric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com>
Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)
Loose mode in 9p utilizes the page cache without respecting coherency with
the server.  Any writes previously invaldiated the entire mapping for a file.
This patch softens the behavior to only invalidate the region of the actual
write.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

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