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authorVenkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>2011-02-16 12:54:22 -0800
committerEric Van Hensbergen <ericvh@gmail.com>2011-03-15 09:57:36 -0500
commitf735195d51e10b2550097f7b0ac12219060e962b (patch)
tree96e752ebf09cad819b9f5dcb178fc016a4dfdd86 /fs/9p
parentca41bb3e21d7b3cb2079e225e3a7e62e6c776518 (diff)
downloadop-kernel-dev-f735195d51e10b2550097f7b0ac12219060e962b.zip
op-kernel-dev-f735195d51e10b2550097f7b0ac12219060e962b.tar.gz
[net/9p] Small non-IO PDUs for zero-copy supporting transports.
If a transport prefers payload to be sent separate from the PDU (P9_TRANS_PREF_PAYLOAD_SEP), there is no need to allocate msize PDU buffers(struct p9_fcall). This patch allocates only upto 4k buffers for this kind of transports and there won't be any change to the legacy transports. Hence, this patch on top of zero copy changes allows user to specify higher msizes through the mount option without hogging the kernel heap. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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