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authorJeff Mahoney <jeffm@suse.com>2009-03-30 14:02:42 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-30 15:16:39 -0400
commitfba4ebb5f0f84a6f9989e9591741ddff946de320 (patch)
tree7d140b781292f00a70a98f0f938fc2ac6f0896c0 /fs/reiserfs/do_balan.c
parent57fe60df62410f949da094d06ced1dda9575b69c (diff)
reiserfs: factor out buffer_info initialization
This is the first in a series of patches to make balance_leaf() not quite so insane. This patch factors out the open coded initializations of buffer_info structures and defines a few initializers for the 4 cases they're used. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/reiserfs/do_balan.c')
-rw-r--r--fs/reiserfs/do_balan.c175
1 files changed, 60 insertions, 115 deletions
diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index e788fbc3ff6b..723a7f4011d0 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -29,6 +29,43 @@ struct tree_balance *cur_tb = NULL; /* detects whether more than one
29 is interrupting do_balance */ 29 is interrupting do_balance */
30#endif 30#endif
31 31
32static inline void buffer_info_init_left(struct tree_balance *tb,
33 struct buffer_info *bi)
34{
35 bi->tb = tb;
36 bi->bi_bh = tb->L[0];
37 bi->bi_parent = tb->FL[0];
38 bi->bi_position = get_left_neighbor_position(tb, 0);
39}
40
41static inline void buffer_info_init_right(struct tree_balance *tb,
42 struct buffer_info *bi)
43{
44 bi->tb = tb;
45 bi->bi_bh = tb->R[0];
46 bi->bi_parent = tb->FR[0];
47 bi->bi_position = get_right_neighbor_position(tb, 0);
48}
49
50static inline void buffer_info_init_tbS0(struct tree_balance *tb,
51 struct buffer_info *bi)
52{
53 bi->tb = tb;
54 bi->bi_bh = PATH_PLAST_BUFFER(tb->tb_path);
55 bi->bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
56 bi->bi_position = PATH_H_POSITION(tb->tb_path, 1);
57}
58
59static inline void buffer_info_init_bh(struct tree_balance *tb,
60 struct buffer_info *bi,
61 struct buffer_head *bh)
62{
63 bi->tb = tb;
64 bi->bi_bh = bh;
65 bi->bi_parent = NULL;
66 bi->bi_position = 0;
67}
68
32inline void do_balance_mark_leaf_dirty(struct tree_balance *tb, 69inline void do_balance_mark_leaf_dirty(struct tree_balance *tb,
33 struct buffer_head *bh, int flag) 70 struct buffer_head *bh, int flag)
34{ 71{
@@ -86,6 +123,7 @@ static int balance_leaf_when_delete(struct tree_balance *tb, int flag)
86 "PAP-12010: tree can not be empty"); 123 "PAP-12010: tree can not be empty");
87 124
88 ih = B_N_PITEM_HEAD(tbS0, item_pos); 125 ih = B_N_PITEM_HEAD(tbS0, item_pos);
126 buffer_info_init_tbS0(tb, &bi);
89 127
90 /* Delete or truncate the item */ 128 /* Delete or truncate the item */
91 129
@@ -96,10 +134,6 @@ static int balance_leaf_when_delete(struct tree_balance *tb, int flag)
96 "vs-12013: mode Delete, insert size %d, ih to be deleted %h", 134 "vs-12013: mode Delete, insert size %d, ih to be deleted %h",
97 -tb->insert_size[0], ih); 135 -tb->insert_size[0], ih);
98 136
99 bi.tb = tb;
100 bi.bi_bh = tbS0;
101 bi.bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
102 bi.bi_position = PATH_H_POSITION(tb->tb_path, 1);
103 leaf_delete_items(&bi, 0, item_pos, 1, -1); 137 leaf_delete_items(&bi, 0, item_pos, 1, -1);
104 138
105 if (!item_pos && tb->CFL[0]) { 139 if (!item_pos && tb->CFL[0]) {
@@ -121,10 +155,6 @@ static int balance_leaf_when_delete(struct tree_balance *tb, int flag)
121 break; 155 break;
122 156
123 case M_CUT:{ /* cut item in S[0] */ 157 case M_CUT:{ /* cut item in S[0] */
124 bi.tb = tb;
125 bi.bi_bh = tbS0;
126 bi.bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
127 bi.bi_position = PATH_H_POSITION(tb->tb_path, 1);
128 if (is_direntry_le_ih(ih)) { 158 if (is_direntry_le_ih(ih)) {
129 159
130 /* UFS unlink semantics are such that you can only delete one directory entry at a time. */ 160 /* UFS unlink semantics are such that you can only delete one directory entry at a time. */
@@ -325,11 +355,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
325 ih_item_len(ih)); 355 ih_item_len(ih));
326 356
327 /* Insert new item into L[0] */ 357 /* Insert new item into L[0] */
328 bi.tb = tb; 358 buffer_info_init_left(tb, &bi);
329 bi.bi_bh = tb->L[0];
330 bi.bi_parent = tb->FL[0];
331 bi.bi_position =
332 get_left_neighbor_position(tb, 0);
333 leaf_insert_into_buf(&bi, 359 leaf_insert_into_buf(&bi,
334 n + item_pos - 360 n + item_pos -
335 ret_val, ih, body, 361 ret_val, ih, body,
@@ -369,11 +395,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
369 leaf_shift_left(tb, tb->lnum[0] - 1, 395 leaf_shift_left(tb, tb->lnum[0] - 1,
370 tb->lbytes); 396 tb->lbytes);
371 /* Insert new item into L[0] */ 397 /* Insert new item into L[0] */
372 bi.tb = tb; 398 buffer_info_init_left(tb, &bi);
373 bi.bi_bh = tb->L[0];
374 bi.bi_parent = tb->FL[0];
375 bi.bi_position =
376 get_left_neighbor_position(tb, 0);
377 leaf_insert_into_buf(&bi, 399 leaf_insert_into_buf(&bi,
378 n + item_pos - 400 n + item_pos -
379 ret_val, ih, body, 401 ret_val, ih, body,
@@ -429,13 +451,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
429 } 451 }
430 452
431 /* Append given directory entry to directory item */ 453 /* Append given directory entry to directory item */
432 bi.tb = tb; 454 buffer_info_init_left(tb, &bi);
433 bi.bi_bh = tb->L[0];
434 bi.bi_parent =
435 tb->FL[0];
436 bi.bi_position =
437 get_left_neighbor_position
438 (tb, 0);
439 leaf_paste_in_buffer 455 leaf_paste_in_buffer
440 (&bi, 456 (&bi,
441 n + item_pos - 457 n + item_pos -
@@ -523,13 +539,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
523 (tbS0, 539 (tbS0,
524 item_pos))); 540 item_pos)));
525 /* Append to body of item in L[0] */ 541 /* Append to body of item in L[0] */
526 bi.tb = tb; 542 buffer_info_init_left(tb, &bi);
527 bi.bi_bh = tb->L[0];
528 bi.bi_parent =
529 tb->FL[0];
530 bi.bi_position =
531 get_left_neighbor_position
532 (tb, 0);
533 leaf_paste_in_buffer 543 leaf_paste_in_buffer
534 (&bi, 544 (&bi,
535 n + item_pos - 545 n + item_pos -
@@ -680,11 +690,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
680 leaf_shift_left(tb, tb->lnum[0], 690 leaf_shift_left(tb, tb->lnum[0],
681 tb->lbytes); 691 tb->lbytes);
682 /* Append to body of item in L[0] */ 692 /* Append to body of item in L[0] */
683 bi.tb = tb; 693 buffer_info_init_left(tb, &bi);
684 bi.bi_bh = tb->L[0];
685 bi.bi_parent = tb->FL[0];
686 bi.bi_position =
687 get_left_neighbor_position(tb, 0);
688 leaf_paste_in_buffer(&bi, 694 leaf_paste_in_buffer(&bi,
689 n + item_pos - 695 n + item_pos -
690 ret_val, 696 ret_val,
@@ -776,11 +782,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
776 set_le_ih_k_offset(ih, offset); 782 set_le_ih_k_offset(ih, offset);
777 put_ih_item_len(ih, tb->rbytes); 783 put_ih_item_len(ih, tb->rbytes);
778 /* Insert part of the item into R[0] */ 784 /* Insert part of the item into R[0] */
779 bi.tb = tb; 785 buffer_info_init_right(tb, &bi);
780 bi.bi_bh = tb->R[0];
781 bi.bi_parent = tb->FR[0];
782 bi.bi_position =
783 get_right_neighbor_position(tb, 0);
784 if ((old_len - tb->rbytes) > zeros_num) { 786 if ((old_len - tb->rbytes) > zeros_num) {
785 r_zeros_number = 0; 787 r_zeros_number = 0;
786 r_body = 788 r_body =
@@ -817,11 +819,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
817 tb->rnum[0] - 1, 819 tb->rnum[0] - 1,
818 tb->rbytes); 820 tb->rbytes);
819 /* Insert new item into R[0] */ 821 /* Insert new item into R[0] */
820 bi.tb = tb; 822 buffer_info_init_right(tb, &bi);
821 bi.bi_bh = tb->R[0];
822 bi.bi_parent = tb->FR[0];
823 bi.bi_position =
824 get_right_neighbor_position(tb, 0);
825 leaf_insert_into_buf(&bi, 823 leaf_insert_into_buf(&bi,
826 item_pos - n + 824 item_pos - n +
827 tb->rnum[0] - 1, 825 tb->rnum[0] - 1,
@@ -881,13 +879,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
881 pos_in_item - 879 pos_in_item -
882 entry_count + 880 entry_count +
883 tb->rbytes - 1; 881 tb->rbytes - 1;
884 bi.tb = tb; 882 buffer_info_init_right(tb, &bi);
885 bi.bi_bh = tb->R[0];
886 bi.bi_parent =
887 tb->FR[0];
888 bi.bi_position =
889 get_right_neighbor_position
890 (tb, 0);
891 leaf_paste_in_buffer 883 leaf_paste_in_buffer
892 (&bi, 0, 884 (&bi, 0,
893 paste_entry_position, 885 paste_entry_position,
@@ -1018,12 +1010,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1018 (tb, tb->CFR[0], 0); 1010 (tb, tb->CFR[0], 0);
1019 1011
1020 /* Append part of body into R[0] */ 1012 /* Append part of body into R[0] */
1021 bi.tb = tb; 1013 buffer_info_init_right(tb, &bi);
1022 bi.bi_bh = tb->R[0];
1023 bi.bi_parent = tb->FR[0];
1024 bi.bi_position =
1025 get_right_neighbor_position
1026 (tb, 0);
1027 if (n_rem > zeros_num) { 1014 if (n_rem > zeros_num) {
1028 r_zeros_number = 0; 1015 r_zeros_number = 0;
1029 r_body = 1016 r_body =
@@ -1070,12 +1057,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1070 tb->rbytes); 1057 tb->rbytes);
1071 /* append item in R[0] */ 1058 /* append item in R[0] */
1072 if (pos_in_item >= 0) { 1059 if (pos_in_item >= 0) {
1073 bi.tb = tb; 1060 buffer_info_init_right(tb, &bi);
1074 bi.bi_bh = tb->R[0];
1075 bi.bi_parent = tb->FR[0];
1076 bi.bi_position =
1077 get_right_neighbor_position
1078 (tb, 0);
1079 leaf_paste_in_buffer(&bi, 1061 leaf_paste_in_buffer(&bi,
1080 item_pos - 1062 item_pos -
1081 n + 1063 n +
@@ -1231,10 +1213,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1231 put_ih_item_len(ih, sbytes[i]); 1213 put_ih_item_len(ih, sbytes[i]);
1232 1214
1233 /* Insert part of the item into S_new[i] before 0-th item */ 1215 /* Insert part of the item into S_new[i] before 0-th item */
1234 bi.tb = tb; 1216 buffer_info_init_bh(tb, &bi, S_new[i]);
1235 bi.bi_bh = S_new[i];
1236 bi.bi_parent = NULL;
1237 bi.bi_position = 0;
1238 1217
1239 if ((old_len - sbytes[i]) > zeros_num) { 1218 if ((old_len - sbytes[i]) > zeros_num) {
1240 r_zeros_number = 0; 1219 r_zeros_number = 0;
@@ -1266,10 +1245,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1266 S_new[i]); 1245 S_new[i]);
1267 1246
1268 /* Insert new item into S_new[i] */ 1247 /* Insert new item into S_new[i] */
1269 bi.tb = tb; 1248 buffer_info_init_bh(tb, &bi, S_new[i]);
1270 bi.bi_bh = S_new[i];
1271 bi.bi_parent = NULL;
1272 bi.bi_position = 0;
1273 leaf_insert_into_buf(&bi, 1249 leaf_insert_into_buf(&bi,
1274 item_pos - n + 1250 item_pos - n +
1275 snum[i] - 1, ih, 1251 snum[i] - 1, ih,
@@ -1326,10 +1302,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1326 sbytes[i] - 1, 1302 sbytes[i] - 1,
1327 S_new[i]); 1303 S_new[i]);
1328 /* Paste given directory entry to directory item */ 1304 /* Paste given directory entry to directory item */
1329 bi.tb = tb; 1305 buffer_info_init_bh(tb, &bi, S_new[i]);
1330 bi.bi_bh = S_new[i];
1331 bi.bi_parent = NULL;
1332 bi.bi_position = 0;
1333 leaf_paste_in_buffer 1306 leaf_paste_in_buffer
1334 (&bi, 0, 1307 (&bi, 0,
1335 pos_in_item - 1308 pos_in_item -
@@ -1399,11 +1372,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1399 if (n_rem < 0) 1372 if (n_rem < 0)
1400 n_rem = 0; 1373 n_rem = 0;
1401 /* Append part of body into S_new[0] */ 1374 /* Append part of body into S_new[0] */
1402 bi.tb = tb; 1375 buffer_info_init_bh(tb, &bi, S_new[i]);
1403 bi.bi_bh = S_new[i];
1404 bi.bi_parent = NULL;
1405 bi.bi_position = 0;
1406
1407 if (n_rem > zeros_num) { 1376 if (n_rem > zeros_num) {
1408 r_zeros_number = 0; 1377 r_zeros_number = 0;
1409 r_body = 1378 r_body =
@@ -1490,10 +1459,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1490 leaf_mi); 1459 leaf_mi);
1491 1460
1492 /* paste into item */ 1461 /* paste into item */
1493 bi.tb = tb; 1462 buffer_info_init_bh(tb, &bi, S_new[i]);
1494 bi.bi_bh = S_new[i];
1495 bi.bi_parent = NULL;
1496 bi.bi_position = 0;
1497 leaf_paste_in_buffer(&bi, 1463 leaf_paste_in_buffer(&bi,
1498 item_pos - n + 1464 item_pos - n +
1499 snum[i], 1465 snum[i],
@@ -1560,10 +1526,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1560 1526
1561 switch (flag) { 1527 switch (flag) {
1562 case M_INSERT: /* insert item into S[0] */ 1528 case M_INSERT: /* insert item into S[0] */
1563 bi.tb = tb; 1529 buffer_info_init_tbS0(tb, &bi);
1564 bi.bi_bh = tbS0;
1565 bi.bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
1566 bi.bi_position = PATH_H_POSITION(tb->tb_path, 1);
1567 leaf_insert_into_buf(&bi, item_pos, ih, body, 1530 leaf_insert_into_buf(&bi, item_pos, ih, body,
1568 zeros_num); 1531 zeros_num);
1569 1532
@@ -1590,14 +1553,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1590 "PAP-12260: insert_size is 0 already"); 1553 "PAP-12260: insert_size is 0 already");
1591 1554
1592 /* prepare space */ 1555 /* prepare space */
1593 bi.tb = tb; 1556 buffer_info_init_tbS0(tb, &bi);
1594 bi.bi_bh = tbS0;
1595 bi.bi_parent =
1596 PATH_H_PPARENT(tb->tb_path,
1597 0);
1598 bi.bi_position =
1599 PATH_H_POSITION(tb->tb_path,
1600 1);
1601 leaf_paste_in_buffer(&bi, 1557 leaf_paste_in_buffer(&bi,
1602 item_pos, 1558 item_pos,
1603 pos_in_item, 1559 pos_in_item,
@@ -1645,14 +1601,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
1645 RFALSE(tb->insert_size[0] <= 0, 1601 RFALSE(tb->insert_size[0] <= 0,
1646 "PAP-12275: insert size must not be %d", 1602 "PAP-12275: insert size must not be %d",
1647 tb->insert_size[0]); 1603 tb->insert_size[0]);
1648 bi.tb = tb; 1604 buffer_info_init_tbS0(tb, &bi);
1649 bi.bi_bh = tbS0;
1650 bi.bi_parent =
1651 PATH_H_PPARENT(tb->tb_path,
1652 0);
1653 bi.bi_position =
1654 PATH_H_POSITION(tb->tb_path,
1655 1);
1656 leaf_paste_in_buffer(&bi, 1605 leaf_paste_in_buffer(&bi,
1657 item_pos, 1606 item_pos,
1658 pos_in_item, 1607 pos_in_item,
@@ -1725,7 +1674,6 @@ void make_empty_node(struct buffer_info *bi)
1725struct buffer_head *get_FEB(struct tree_balance *tb) 1674struct buffer_head *get_FEB(struct tree_balance *tb)
1726{ 1675{
1727 int i; 1676 int i;
1728 struct buffer_head *first_b;
1729 struct buffer_info bi; 1677 struct buffer_info bi;
1730 1678
1731 for (i = 0; i < MAX_FEB_SIZE; i++) 1679 for (i = 0; i < MAX_FEB_SIZE; i++)
@@ -1735,16 +1683,13 @@ struct buffer_head *get_FEB(struct tree_balance *tb)
1735 if (i == MAX_FEB_SIZE) 1683 if (i == MAX_FEB_SIZE)
1736 reiserfs_panic(tb->tb_sb, "vs-12300", "FEB list is empty"); 1684 reiserfs_panic(tb->tb_sb, "vs-12300", "FEB list is empty");
1737 1685
1738 bi.tb = tb; 1686 buffer_info_init_bh(tb, &bi, tb->FEB[i]);
1739 bi.bi_bh = first_b = tb->FEB[i];
1740 bi.bi_parent = NULL;
1741 bi.bi_position = 0;
1742 make_empty_node(&bi); 1687 make_empty_node(&bi);
1743 set_buffer_uptodate(first_b); 1688 set_buffer_uptodate(tb->FEB[i]);
1689 tb->used[i] = tb->FEB[i];
1744 tb->FEB[i] = NULL; 1690 tb->FEB[i] = NULL;
1745 tb->used[i] = first_b;
1746 1691
1747 return (first_b); 1692 return tb->used[i];
1748} 1693}
1749 1694
1750/* This is now used because reiserfs_free_block has to be able to 1695/* This is now used because reiserfs_free_block has to be able to
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-25 05:13:10 -0400