btrfs: assume valid token for btrfs_set/get_token helpers

Now that we can safely assume that the token is always a valid pointer,
remove the branches that check that.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/struct-funcs.c b/fs/btrfs/struct-funcs.c
index e63936e..3a29b91 100644 (file)
--- a/fs/btrfs/struct-funcs.c
+++ b/fs/btrfs/struct-funcs.c
@@ -52,7 +52,9 @@ u##bits btrfs_get_token_##bits(const struct extent_buffer *eb,                \
        int size = sizeof(u##bits);                                     \
        u##bits res;                                                    \
                                                                        \
-       if (token && token->kaddr && token->offset <= offset &&         \
+       ASSERT(token);                                                  \
+                                                                       \
+       if (token->kaddr && token->offset <= offset &&                  \
            token->eb == eb &&                                          \
           (token->offset + PAGE_SIZE >= offset + size)) {      \
                kaddr = token->kaddr;                                   \
@@ -70,11 +72,9 @@ u##bits btrfs_get_token_##bits(const struct extent_buffer *eb,               \
        }                                                               \
        p = kaddr + part_offset - map_start;                            \
        res = get_unaligned_le##bits(p + off);                          \
-       if (token) {                                                    \
-               token->kaddr = kaddr;                                   \
-               token->offset = map_start;                              \
-               token->eb = eb;                                         \
-       }                                                               \
+       token->kaddr = kaddr;                                           \
+       token->offset = map_start;                                      \
+       token->eb = eb;                                                 \
        return res;                                                     \
 }                                                                      \
 u##bits btrfs_get_##bits(const struct extent_buffer *eb,               \
@@ -116,7 +116,9 @@ void btrfs_set_token_##bits(struct extent_buffer *eb,                       \
        unsigned long map_len;                                          \
        int size = sizeof(u##bits);                                     \
                                                                        \
-       if (token && token->kaddr && token->offset <= offset &&         \
+       ASSERT(token);                                                  \
+                                                                       \
+       if (token->kaddr && token->offset <= offset &&                  \
            token->eb == eb &&                                          \
           (token->offset + PAGE_SIZE >= offset + size)) {      \
                kaddr = token->kaddr;                                   \
@@ -135,11 +137,9 @@ void btrfs_set_token_##bits(struct extent_buffer *eb,                      \
        }                                                               \
        p = kaddr + part_offset - map_start;                            \
        put_unaligned_le##bits(val, p + off);                           \
-       if (token) {                                                    \
-               token->kaddr = kaddr;                                   \
-               token->offset = map_start;                              \
-               token->eb = eb;                                         \
-       }                                                               \
+       token->kaddr = kaddr;                                           \
+       token->offset = map_start;                                      \
+       token->eb = eb;                                                 \
 }                                                                      \
 void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,             \
                      unsigned long off, u##bits val)                   \