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NFSv4.1: shift pnfs_update_layout locations

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Move the pnfs_update_layout call location to nfs_pageio_do_add_request().
Grab the lseg sent in the doio function to nfs_read_rpcsetup and attach
it to each nfs_read_data so it can be sent to the layout driver.

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>
This commit is contained in:
Fred Isaman
2011-03-01 01:34:15 +00:00
committed by Trond Myklebust
parent 94ad1c80e2
commit bae724ef95
8 changed files with 52 additions and 38 deletions
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29
fs/nfs/pnfs.c
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@@ -245,7 +245,7 @@ put_lseg_common(struct pnfs_layout_segment *lseg)
rpc_wake_up(&NFS_SERVER(inode)->roc_rpcwaitq);
}
static void
void
put_lseg(struct pnfs_layout_segment *lseg)
{
struct inode *inode;
@@ -784,7 +784,6 @@ pnfs_update_layout(struct inode *ino,
out:
dprintk("%s end, state 0x%lx lseg %p\n", __func__,
nfsi->layout ? nfsi->layout->plh_flags : -1, lseg);
put_lseg(lseg); /* STUB - callers currently ignore return value */
return lseg;
out_unlock:
spin_unlock(&ino->i_lock);
@@ -858,20 +857,26 @@ out_forget_reply:
goto out;
}
static void
pnfs_set_pg_test(struct inode *inode, struct nfs_pageio_descriptor *pgio)
static int pnfs_read_pg_test(struct nfs_pageio_descriptor *pgio,
struct nfs_page *prev,
struct nfs_page *req)
{
if (pgio->pg_count == prev->wb_bytes) {
/* This is first coelesce call for a series of nfs_pages */
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
prev->wb_context,
IOMODE_READ);
}
return NFS_SERVER(pgio->pg_inode)->pnfs_curr_ld->pg_test(pgio, prev, req);
}
void
pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode)
{
struct pnfs_layoutdriver_type *ld;
ld = NFS_SERVER(inode)->pnfs_curr_ld;
pgio->pg_test = (ld ? ld->pg_test : NULL);
}
void
pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
struct inode *inode)
{
pnfs_set_pg_test(inode, pgio);
pgio->pg_test = (ld && ld->pg_test) ? pnfs_read_pg_test : NULL;
}
/*