NFS: Optimize allocation of nfs_read/write_data structures
Clean up use of page_array, and fix an off-by-one error noticed by Tom
Talpey which causes kmalloc calls in cases where using the page_array
is sufficient.
Test plan:
Normal client functional testing with r/wsize=32768.
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index c483e23..e206c07 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -694,7 +694,7 @@
#ifdef CONFIG_NFS_V4
unsigned long timestamp; /* For lease renewal */
#endif
- struct page *page_array[NFS_PAGEVEC_SIZE + 1];
+ struct page *page_array[NFS_PAGEVEC_SIZE];
};
struct nfs_write_data {
@@ -712,7 +712,7 @@
#ifdef CONFIG_NFS_V4
unsigned long timestamp; /* For lease renewal */
#endif
- struct page *page_array[NFS_PAGEVEC_SIZE + 1];
+ struct page *page_array[NFS_PAGEVEC_SIZE];
};
struct nfs_access_entry;