[PATCH] SQUASHME: Fix BUG in: NFSv4.1: unify pnfs_pageio_init functions

[Boaz Harrosh <bharrosh@panasas.com>]

The call to pnfs_pageio_init() was done before the call
to nfs_pageio_init which would override the .pg_test set
there.

But enough is enough. One init function is more than
enough.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
---
 fs/nfs/pagelist.c |    7 ++++++-
 fs/nfs/pnfs.c     |    2 +-
 fs/nfs/pnfs.h     |    8 --------
 fs/nfs/read.c     |    1 -
 fs/nfs/write.c    |    1 -
 5 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index dbf82ab..a6cb0e9 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -233,6 +233,8 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
 		     size_t bsize,
 		     int io_flags)
 {
+	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
+
 	INIT_LIST_HEAD(&desc->pg_list);
 	desc->pg_bytes_written = 0;
 	desc->pg_count = 0;
@@ -244,7 +246,10 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
 	desc->pg_ioflags = io_flags;
 	desc->pg_error = 0;
 	desc->pg_lseg = NULL;
-	desc->pg_test = nfs_generic_pg_test;
+	if (ld)
+		desc->pg_test = ld->pg_test;
+	else
+		desc->pg_test = nfs_generic_pg_test;
 }
 
 /**
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 8171212..d79f2df 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1058,7 +1058,7 @@ pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev,
 		access_type = IOMODE_RW;
 		gfp_flags = GFP_NOFS;
 	}
-		
+
 	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,
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index a279969..c6970fd 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -292,14 +292,6 @@ static inline int pnfs_return_layout(struct inode *ino)
 	return 0;
 }
 
-static inline void pnfs_pageio_init(struct nfs_pageio_descriptor *pgio, struct inode *inode)
-{
-	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
-
-	if (ld)
-		pgio->pg_test = ld->pg_test;
-}
-
 #else  /* CONFIG_NFS_V4_1 */
 
 static inline void pnfs_destroy_all_layouts(struct nfs_client *clp)
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 6bd09a8..20a7f95 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -664,7 +664,6 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
 	if (ret == 0)
 		goto read_complete; /* all pages were read */
 
-	pnfs_pageio_init(&pgio, inode);
 	if (rsize < PAGE_CACHE_SIZE)
 		nfs_pageio_init(&pgio, inode, nfs_pagein_multi, rsize, 0);
 	else
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index d81c5c0..e268e3b 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1036,7 +1036,6 @@ static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
 {
 	size_t wsize = NFS_SERVER(inode)->wsize;
 
-	pnfs_pageio_init(pgio, inode);
 	if (wsize < PAGE_CACHE_SIZE)
 		nfs_pageio_init(pgio, inode, nfs_flush_multi, wsize, ioflags);
 	else
-- 
1.7.2.3