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NFSv4.1: use pnfs_generic_pg_test directly by layout driver 

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy 2011-05-25 20:54:40 +03:00 committed by Boaz Harrosh
parent 18ad0a9f2c
commit 89a58e32d9
4 changed files with 17 additions and 19 deletions
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3
fs/nfs/nfs4filelayout.c
View File

@ -661,6 +661,9 @@ filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev,
u64 p_stripe, r_stripe;
u32 stripe_unit;
if (!pnfs_generic_pg_test(pgio, prev, req))
return 0;
if (!pgio->pg_lseg)
return 1;
p_stripe = (u64)prev->wb_index << PAGE_CACHE_SHIFT;

14
fs/nfs/objlayout/objio_osd.c
View File

@ -988,18 +988,6 @@ ssize_t objio_write_pagelist(struct objlayout_io_state *ol_state, bool stable)
return _write_exec(ios);
}
/*
* objlayout_pg_test(). Called by nfs_can_coalesce_requests()
*
* return true iff coalesce page
*/
bool
objlayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev,
struct nfs_page *req)
{
return true;
}
static struct pnfs_layoutdriver_type objlayout_type = {
.id = LAYOUT_OSD2_OBJECTS,
.name = "LAYOUT_OSD2_OBJECTS",
@ -1013,7 +1001,7 @@ static struct pnfs_layoutdriver_type objlayout_type = {
.read_pagelist = objlayout_read_pagelist,
.write_pagelist = objlayout_write_pagelist,
.pg_test = objlayout_pg_test,
.pg_test = pnfs_generic_pg_test,
.free_deviceid_node = objio_free_deviceid_node,

9
fs/nfs/pnfs.c
View File

@ -1067,12 +1067,17 @@ pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev,
pgio->pg_count,
access_type,
gfp_flags);
} else if (pgio->pg_lseg &&
return true;
}
if (pgio->pg_lseg &&
req_offset(req) > end_offset(pgio->pg_lseg->pls_range.offset,
pgio->pg_lseg->pls_range.length))
return false;
return NFS_SERVER(pgio->pg_inode)->pnfs_curr_ld->pg_test(pgio, prev, req);
return true;
}
EXPORT_SYMBOL_GPL(pnfs_generic_pg_test);
/*
* Called by non rpc-based layout drivers

6
fs/nfs/pnfs.h
View File

@ -295,8 +295,10 @@ static inline int pnfs_return_layout(struct inode *ino)
static inline void pnfs_pageio_init(struct nfs_pageio_descriptor *pgio,
struct inode *inode)
{
if (NFS_SERVER(inode)->pnfs_curr_ld)
pgio->pg_test = pnfs_generic_pg_test;
struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
if (ld)
pgio->pg_test = ld->pg_test;
}
#else /* CONFIG_NFS_V4_1 */