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| author | Fred Isaman <iisaman@netapp.com> | 2012-04-20 14:47:44 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-04-27 14:10:37 -0400 |
| commit | cd841605f7a721878d8a2d1362484723d8abf569 (patch) | |
| tree | b5c37db575cd545a183577249909e042fe38d646 /drivers/message | |
| parent | b5542849764aa56fd3f05c0041195b637b9d2ac2 (diff) | |
| download | blackbird-op-linux-cd841605f7a721878d8a2d1362484723d8abf569.tar.gz blackbird-op-linux-cd841605f7a721878d8a2d1362484723d8abf569.zip | |
NFS: create common nfs_pgio_header for both read and write
In order to avoid duplicating all the data in nfs_read_data whenever we
split it up into multiple RPC calls (either due to a short read result
or due to rsize < PAGE_SIZE), we split out the bits that are the same
per RPC call into a separate "header" structure.
The goal this patch moves towards is to have a single header
refcounted by several rpc_data structures. Thus, want to always refer
from rpc_data to the header, and not the other way. This patch comes
close to that ideal, but the directio code currently needs some
special casing, isolated in the nfs_direct_[read_write]hdr_release()
functions. This will be dealt with in a future patch.
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'drivers/message')
0 files changed, 0 insertions, 0 deletions
