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authorFred Isaman <iisaman@netapp.com>2011-03-01 01:34:14 +0000
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-03-11 15:38:42 -0500
commit94ad1c80e28f9700c84b4d28d1e5302ddf63a6fd (patch)
tree2c600c1f8e85648c7693b5f0018b5d0b7e960b5f /fs/nfs/read.c
parentd684d2ae10a4f95d3035abf698d7d611ff2cd279 (diff)
NFSv4.1: coelesce across layout stripes
Add a pg_test layout driver hook which is used to avoid coelescing I/O across layout stripes. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/read.c')
-rw-r--r--fs/nfs/read.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index aedcaa7f291..2a2765975e1 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -626,6 +626,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
goto read_complete; /* all pages were read */
pnfs_update_layout(inode, desc.ctx, IOMODE_READ);
+ pnfs_pageio_init_read(&pgio, inode);
if (rsize < PAGE_CACHE_SIZE)
nfs_pageio_init(&pgio, inode, nfs_pagein_multi, rsize, 0);
else