NFS: use size_t type for holding rsize bytes in NFS O_DIRECT read path

size_t is used for holding byte counts, so use it for variables storing rsize.
Note that the write path will be updated as we add support for async
O_DIRECT writes.

Test plan:
Need to verify that existing comparisons against new size_t variables behave
correctly.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index d38c3dc..8f5d2df 100644 (file)
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -161,7 +161,7 @@ static void nfs_direct_req_release(struct kref *kref)
  * done.  This prevents races with I/O completion so we will always wait
  * until all requests have been dispatched and completed.
  */
-static struct nfs_direct_req *nfs_direct_read_alloc(size_t nbytes, unsigned int rsize)
+static struct nfs_direct_req *nfs_direct_read_alloc(size_t nbytes, size_t rsize)
 {
        struct list_head *list;
        struct nfs_direct_req *dreq;
@@ -244,14 +244,14 @@ static void nfs_direct_read_schedule(struct nfs_direct_req *dreq, struct inode *
 {
        struct list_head *list = &dreq->list;
        struct page **pages = dreq->pages;
+       size_t rsize = NFS_SERVER(inode)->rsize;
        unsigned int curpage, pgbase;
-       unsigned int rsize = NFS_SERVER(inode)->rsize;
 
        curpage = 0;
        pgbase = user_addr & ~PAGE_MASK;
        do {
                struct nfs_read_data *data;
-               unsigned int bytes;
+               size_t bytes;
 
                bytes = rsize;
                if (count < rsize)