Btrfs: fix __ucmpdi2 compile bug on 32 bit builds

We get this on 32 builds:

fs/built-in.o: In function `extent_fiemap':
(.text+0x1019f2): undefined reference to `__ucmpdi2'

Happens because of a switch statement with a 64 bit argument.
Convert this to an if statement to fix this.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 08085af089e27827eba49898146ebe63c6623b07..eb2bee8b7fbfb19fb37dc26cbe6fe01ec92ea3ef 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2884,25 +2884,19 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                disko = 0;
                flags = 0;
 
-               switch (em->block_start) {
-               case EXTENT_MAP_LAST_BYTE:
+               if (em->block_start == EXTENT_MAP_LAST_BYTE) {
                        end = 1;
                        flags |= FIEMAP_EXTENT_LAST;
-                       break;
-               case EXTENT_MAP_HOLE:
+               } else if (em->block_start == EXTENT_MAP_HOLE) {
                        flags |= FIEMAP_EXTENT_UNWRITTEN;
-                       break;
-               case EXTENT_MAP_INLINE:
+               } else if (em->block_start == EXTENT_MAP_INLINE) {
                        flags |= (FIEMAP_EXTENT_DATA_INLINE |
                                  FIEMAP_EXTENT_NOT_ALIGNED);
-                       break;
-               case EXTENT_MAP_DELALLOC:
+               } else if (em->block_start == EXTENT_MAP_DELALLOC) {
                        flags |= (FIEMAP_EXTENT_DELALLOC |
                                  FIEMAP_EXTENT_UNKNOWN);
-                       break;
-               default:
+               } else {
                        disko = em->block_start;
-                       break;
                }
                if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags))
                        flags |= FIEMAP_EXTENT_ENCODED;