[PATCH] change buffer_head.b_size to size_t

Increase the size of the buffer_head b_size field (only) for 64 bit platforms.
Update some old and moldy comments in and around the structure as well.

The b_size increase allows us to perform larger mappings and allocations for
large I/O requests from userspace, which tie in with other changes allowing
the get_block_t() interface to map multiple blocks at once.

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index f25f58096428..e7a1461f4387 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -426,8 +426,10 @@ __find_get_block_slow(struct block_device *bdev, sector_t block)
         if (all_mapped) {
                 printk("__find_get_block_slow() failed. "
                         "block=%llu, b_blocknr=%llu\n",
-                        (unsigned long long)block, (unsigned long long)bh->b_blocknr);
-                printk("b_state=0x%08lx, b_size=%u\n", bh->b_state, bh->b_size);
+                        (unsigned long long)block,
+                        (unsigned long long)bh->b_blocknr);
+                printk("b_state=0x%08lx, b_size=%zu\n",
+                        bh->b_state, bh->b_size);
                 printk("device blocksize: %d\n", 1 << bd_inode->i_blkbits);
         }
 out_unlock: