Merge tag '8139cp-20060912-00' of git://electric-eye.fr.zoreil.com/home/romieu/linux...

[pandora-kernel.git] / fs / nfs / read.c

diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index da9cf11..7a9ee00 100644 (file)
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -43,13 +43,15 @@ static mempool_t *nfs_rdata_mempool;
 
 #define MIN_POOL_READ  (32)
 
-struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
+struct nfs_read_data *nfs_readdata_alloc(size_t len)
 {
+       unsigned int pagecount = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
        struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, SLAB_NOFS);
 
        if (p) {
                memset(p, 0, sizeof(*p));
                INIT_LIST_HEAD(&p->pages);
+               p->npages = pagecount;
                if (pagecount <= ARRAY_SIZE(p->page_array))
                        p->pagevec = p->page_array;
                else {
@@ -140,7 +142,7 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode,
        int             result;
        struct nfs_read_data *rdata;
 
-       rdata = nfs_readdata_alloc(1);
+       rdata = nfs_readdata_alloc(count);
        if (!rdata)
                return -ENOMEM;
 
@@ -336,25 +338,25 @@ static int nfs_pagein_multi(struct list_head *head, struct inode *inode)
        struct nfs_page *req = nfs_list_entry(head->next);
        struct page *page = req->wb_page;
        struct nfs_read_data *data;
-       unsigned int rsize = NFS_SERVER(inode)->rsize;
-       unsigned int nbytes, offset;
+       size_t rsize = NFS_SERVER(inode)->rsize, nbytes;
+       unsigned int offset;
        int requests = 0;
        LIST_HEAD(list);
 
        nfs_list_remove_request(req);
 
        nbytes = req->wb_bytes;
-       for(;;) {
-               data = nfs_readdata_alloc(1);
+       do {
+               size_t len = min(nbytes,rsize);
+
+               data = nfs_readdata_alloc(len);
                if (!data)
                        goto out_bad;
                INIT_LIST_HEAD(&data->pages);
                list_add(&data->pages, &list);
                requests++;
-               if (nbytes <= rsize)
-                       break;
-               nbytes -= rsize;
-       }
+               nbytes -= len;
+       } while(nbytes != 0);
        atomic_set(&req->wb_complete, requests);
 
        ClearPageError(page);
@@ -402,7 +404,7 @@ static int nfs_pagein_one(struct list_head *head, struct inode *inode)
        if (NFS_SERVER(inode)->rsize < PAGE_CACHE_SIZE)
                return nfs_pagein_multi(head, inode);
 
-       data = nfs_readdata_alloc(NFS_SERVER(inode)->rpages);
+       data = nfs_readdata_alloc(NFS_SERVER(inode)->rsize);
        if (!data)
                goto out_bad;