__ufs_trunc_blocks(): turn the part after switch into a loop

... and turn the switch into if (), since all cases with
depth != 1 have just become identical.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 10 insertions, 25 deletions

diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 1427d277a690..285eacd02d60 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -1222,6 +1222,7 @@ static void __ufs_truncate_blocks(struct inode *inode)
         unsigned offsets[4];
         int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets);
         int depth2;
+        unsigned i;
 
         if (!depth)
                 return;
@@ -1232,33 +1233,17 @@ static void __ufs_truncate_blocks(struct inode *inode)
                         break;
 
         mutex_lock(&ufsi->truncate_mutex);
-        switch (depth) {
-        case 1:
+        if (depth == 1) {
                 ufs_trunc_direct(inode);
-                goto l1;
-        case 2:
-                ufs_trunc_branch(inode, offsets + 1, depth2, 1,
-                           ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK));
-                goto l2;
-        case 3:
-                ufs_trunc_branch(inode, offsets + 1, depth2, 2,
-                            ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK));
-                goto l3;
-        case 4:
-                ufs_trunc_branch(inode, offsets + 1, depth2, 3,
-                            ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK));
-                goto l4;
+                offsets[0] = UFS_IND_BLOCK;
+        } else {
+                ufs_trunc_branch(inode, offsets + 1, depth2, depth - 1,
+                           ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]++));
+        }
+        for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) {
+                ufs_trunc_branch(inode, NULL, 0, i - UFS_IND_BLOCK + 1,
+                           ufs_get_direct_data_ptr(uspi, ufsi, i));
         }
-l1:
-        ufs_trunc_branch(inode, NULL, 0, 1,
-                           ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK));
-l2:
-        ufs_trunc_branch(inode, NULL, 0, 2,
-                            ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK));
-l3:
-        ufs_trunc_branch(inode, NULL, 0, 3,
-                            ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK));
-l4:
         ufsi->i_lastfrag = DIRECT_FRAGMENT;
         mutex_unlock(&ufsi->truncate_mutex);
 }