Update from upstream with manual merge of Yasunori Goto's

changes to swiotlb.c made in commit 281dd25cdc0d6903929b79183816d151ea626341
since this file has been moved from arch/ia64/lib/swiotlb.c to
lib/swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 31 insertions, 13 deletions

diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index c7b39aa279d7..3af6c73c5b5a 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -357,28 +357,46 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
         }
 
         info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1)>>BFS_BSIZE_BITS; /* for statfs(2) */
-        info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1 -  cpu_to_le32(bfs_sb->s_start))>>BFS_BSIZE_BITS;
+        info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1 -  le32_to_cpu(bfs_sb->s_start))>>BFS_BSIZE_BITS;
         info->si_freei = 0;
         info->si_lf_eblk = 0;
         info->si_lf_sblk = 0;
         info->si_lf_ioff = 0;
+        bh = NULL;
         for (i=BFS_ROOT_INO; i<=info->si_lasti; i++) {
-                inode = iget(s,i);
-                if (BFS_I(inode)->i_dsk_ino == 0)
+                struct bfs_inode *di;
+                int block = (i - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+                int off = (i - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
+                unsigned long sblock, eblock;
+
+                if (!off) {
+                        brelse(bh);
+                        bh = sb_bread(s, block);
+                }
+
+                if (!bh)
+                        continue;
+
+                di = (struct bfs_inode *)bh->b_data + off;
+
+                if (!di->i_ino) {
                         info->si_freei++;
-                else {
-                        set_bit(i, info->si_imap);
-                        info->si_freeb -= inode->i_blocks;
-                        if (BFS_I(inode)->i_eblock > info->si_lf_eblk) {
-                                info->si_lf_eblk = BFS_I(inode)->i_eblock;
-                                info->si_lf_sblk = BFS_I(inode)->i_sblock;
-                                info->si_lf_ioff = BFS_INO2OFF(i);
-                        }
+                        continue;
+                }
+                set_bit(i, info->si_imap);
+                info->si_freeb -= BFS_FILEBLOCKS(di);
+
+                sblock =  le32_to_cpu(di->i_sblock);
+                eblock =  le32_to_cpu(di->i_eblock);
+                if (eblock > info->si_lf_eblk) {
+                        info->si_lf_eblk = eblock;
+                        info->si_lf_sblk = sblock;
+                        info->si_lf_ioff = BFS_INO2OFF(i);
                 }
-                iput(inode);
         }
+        brelse(bh);
         if (!(s->s_flags & MS_RDONLY)) {
-                mark_buffer_dirty(bh);
+                mark_buffer_dirty(info->si_sbh);
                 s->s_dirt = 1;
         } 
         dump_imap("read_super", s);