diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 74 |
1 files changed, 4 insertions, 70 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index a942a2427228..d1c6f023a302 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h | |||
| @@ -426,77 +426,11 @@ struct btrfs_root { | |||
| 426 | offsetof(type, member), \ | 426 | offsetof(type, member), \ |
| 427 | sizeof(((type *)0)->member))) | 427 | sizeof(((type *)0)->member))) |
| 428 | 428 | ||
| 429 | #ifndef BTRFS_SETGET_FUNCS | ||
| 429 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ | 430 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
| 430 | static inline u##bits btrfs_##name(struct extent_buffer *eb, \ | 431 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
| 431 | type *s) \ | 432 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); |
| 432 | { \ | 433 | #endif |
| 433 | int err; \ | ||
| 434 | char *map_token; \ | ||
| 435 | char *kaddr; \ | ||
| 436 | int unmap_on_exit = (eb->map_token == NULL); \ | ||
| 437 | unsigned long map_start; \ | ||
| 438 | unsigned long map_len; \ | ||
| 439 | unsigned long offset = (unsigned long)s + \ | ||
| 440 | offsetof(type, member); \ | ||
| 441 | if (eb->map_token && offset >= eb->map_start && \ | ||
| 442 | offset + sizeof(((type *)0)->member) <= eb->map_start + \ | ||
| 443 | eb->map_len) { \ | ||
| 444 | kaddr = eb->kaddr; \ | ||
| 445 | map_start = eb->map_start; \ | ||
| 446 | err = 0; \ | ||
| 447 | } else { \ | ||
| 448 | err = map_extent_buffer(eb, offset, \ | ||
| 449 | sizeof(((type *)0)->member), \ | ||
| 450 | &map_token, &kaddr, \ | ||
| 451 | &map_start, &map_len, KM_USER1); \ | ||
| 452 | } \ | ||
| 453 | if (!err) { \ | ||
| 454 | __le##bits *tmp = (__le##bits *)(kaddr + offset - \ | ||
| 455 | map_start); \ | ||
| 456 | u##bits res = le##bits##_to_cpu(*tmp); \ | ||
| 457 | if (unmap_on_exit) \ | ||
| 458 | unmap_extent_buffer(eb, map_token, KM_USER1); \ | ||
| 459 | return res; \ | ||
| 460 | } else { \ | ||
| 461 | __le##bits res; \ | ||
| 462 | read_eb_member(eb, s, type, member, &res); \ | ||
| 463 | return le##bits##_to_cpu(res); \ | ||
| 464 | } \ | ||
| 465 | } \ | ||
| 466 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | ||
| 467 | type *s, u##bits val) \ | ||
| 468 | { \ | ||
| 469 | int err; \ | ||
| 470 | char *map_token; \ | ||
| 471 | char *kaddr; \ | ||
| 472 | unsigned long map_start; \ | ||
| 473 | unsigned long map_len; \ | ||
| 474 | int unmap_on_exit = (eb->map_token == NULL); \ | ||
| 475 | unsigned long offset = (unsigned long)s + \ | ||
| 476 | offsetof(type, member); \ | ||
| 477 | if (eb->map_token && offset >= eb->map_start && \ | ||
| 478 | offset + sizeof(((type *)0)->member) <= eb->map_start + \ | ||
| 479 | eb->map_len) { \ | ||
| 480 | kaddr = eb->kaddr; \ | ||
| 481 | map_start = eb->map_start; \ | ||
| 482 | err = 0; \ | ||
| 483 | } else { \ | ||
| 484 | err = map_extent_buffer(eb, offset, \ | ||
| 485 | sizeof(((type *)0)->member), \ | ||
| 486 | &map_token, &kaddr, \ | ||
| 487 | &map_start, &map_len, KM_USER1); \ | ||
| 488 | } \ | ||
| 489 | if (!err) { \ | ||
| 490 | __le##bits *tmp = (__le##bits *)(kaddr + offset - \ | ||
| 491 | map_start); \ | ||
| 492 | *tmp = cpu_to_le##bits(val); \ | ||
| 493 | if (unmap_on_exit) \ | ||
| 494 | unmap_extent_buffer(eb, map_token, KM_USER1); \ | ||
| 495 | } else { \ | ||
| 496 | val = cpu_to_le##bits(val); \ | ||
| 497 | write_eb_member(eb, s, type, member, &val); \ | ||
| 498 | } \ | ||
| 499 | } | ||
| 500 | 434 | ||
| 501 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | 435 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ |
| 502 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | 436 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ |