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authorVenkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>2011-01-28 14:11:13 -0800
committerEric Van Hensbergen <ericvh@gmail.com>2011-03-15 09:57:34 -0500
commit022cae36551ba805bf82084047945b2901d75f36 (patch)
tree5d8a8ff0eb2102d0449f58ddfcb8907bd3625682 /net/phonet/socket.c
parent6752a1ebd13f69b9d5ff08914fe29ee2813cbeea (diff)
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[net/9p] Preparation and helper functions for zero copy
This patch prepares p9_fcall structure for zero copy. Added fields send the payload buffer information to the transport layer. In addition it adds a 'private' field for the transport layer to store mapped/pinned page information so that it can be freed/unpinned during req_done. This patch also creates trans_common.[ch] to house helper functions. It adds the following helper functions. p9_release_req_pages - Release pages after the transaction. p9_nr_pages - Return number of pages needed to accomodate the payload. payload_gup - Translates user buffer into kernel pages. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'net/phonet/socket.c')
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