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Diffstat (limited to 'fs/ext4/extents.c')
-rw-r--r--fs/ext4/extents.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index ce9aa5860569..bc7081f1fbe8 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1029,7 +1029,7 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
1029{ 1029{
1030 struct ext4_extent_idx *ix; 1030 struct ext4_extent_idx *ix;
1031 struct ext4_extent *ex; 1031 struct ext4_extent *ex;
1032 int depth; 1032 int depth, ee_len;
1033 1033
1034 BUG_ON(path == NULL); 1034 BUG_ON(path == NULL);
1035 depth = path->p_depth; 1035 depth = path->p_depth;
@@ -1043,6 +1043,7 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
1043 * first one in the file */ 1043 * first one in the file */
1044 1044
1045 ex = path[depth].p_ext; 1045 ex = path[depth].p_ext;
1046 ee_len = ext4_ext_get_actual_len(ex);
1046 if (*logical < le32_to_cpu(ex->ee_block)) { 1047 if (*logical < le32_to_cpu(ex->ee_block)) {
1047 BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex); 1048 BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex);
1048 while (--depth >= 0) { 1049 while (--depth >= 0) {
@@ -1052,10 +1053,10 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
1052 return 0; 1053 return 0;
1053 } 1054 }
1054 1055
1055 BUG_ON(*logical < le32_to_cpu(ex->ee_block) + le16_to_cpu(ex->ee_len)); 1056 BUG_ON(*logical < (le32_to_cpu(ex->ee_block) + ee_len));
1056 1057
1057 *logical = le32_to_cpu(ex->ee_block) + le16_to_cpu(ex->ee_len) - 1; 1058 *logical = le32_to_cpu(ex->ee_block) + ee_len - 1;
1058 *phys = ext_pblock(ex) + le16_to_cpu(ex->ee_len) - 1; 1059 *phys = ext_pblock(ex) + ee_len - 1;
1059 return 0; 1060 return 0;
1060} 1061}
1061 1062
@@ -1075,7 +1076,7 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
1075 struct ext4_extent_idx *ix; 1076 struct ext4_extent_idx *ix;
1076 struct ext4_extent *ex; 1077 struct ext4_extent *ex;
1077 ext4_fsblk_t block; 1078 ext4_fsblk_t block;
1078 int depth; 1079 int depth, ee_len;
1079 1080
1080 BUG_ON(path == NULL); 1081 BUG_ON(path == NULL);
1081 depth = path->p_depth; 1082 depth = path->p_depth;
@@ -1089,6 +1090,7 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
1089 * first one in the file */ 1090 * first one in the file */
1090 1091
1091 ex = path[depth].p_ext; 1092 ex = path[depth].p_ext;
1093 ee_len = ext4_ext_get_actual_len(ex);
1092 if (*logical < le32_to_cpu(ex->ee_block)) { 1094 if (*logical < le32_to_cpu(ex->ee_block)) {
1093 BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex); 1095 BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex);
1094 while (--depth >= 0) { 1096 while (--depth >= 0) {
@@ -1100,7 +1102,7 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
1100 return 0; 1102 return 0;
1101 } 1103 }
1102 1104
1103 BUG_ON(*logical < le32_to_cpu(ex->ee_block) + le16_to_cpu(ex->ee_len)); 1105 BUG_ON(*logical < (le32_to_cpu(ex->ee_block) + ee_len));
1104 1106
1105 if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) { 1107 if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) {
1106 /* next allocated block in this leaf */ 1108 /* next allocated block in this leaf */
@@ -1316,7 +1318,7 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1,
1316 if (ext1_ee_len + ext2_ee_len > max_len) 1318 if (ext1_ee_len + ext2_ee_len > max_len)
1317 return 0; 1319 return 0;
1318#ifdef AGGRESSIVE_TEST 1320#ifdef AGGRESSIVE_TEST
1319 if (le16_to_cpu(ex1->ee_len) >= 4) 1321 if (ext1_ee_len >= 4)
1320 return 0; 1322 return 0;
1321#endif 1323#endif
1322 1324
@@ -2313,7 +2315,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
2313 - le32_to_cpu(newex.ee_block) 2315 - le32_to_cpu(newex.ee_block)
2314 + ext_pblock(&newex); 2316 + ext_pblock(&newex);
2315 /* number of remaining blocks in the extent */ 2317 /* number of remaining blocks in the extent */
2316 allocated = le16_to_cpu(newex.ee_len) - 2318 allocated = ext4_ext_get_actual_len(&newex) -
2317 (iblock - le32_to_cpu(newex.ee_block)); 2319 (iblock - le32_to_cpu(newex.ee_block));
2318 goto out; 2320 goto out;
2319 } else { 2321 } else {
@@ -2429,7 +2431,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
2429 newex.ee_len = cpu_to_le16(max_blocks); 2431 newex.ee_len = cpu_to_le16(max_blocks);
2430 err = ext4_ext_check_overlap(inode, &newex, path); 2432 err = ext4_ext_check_overlap(inode, &newex, path);
2431 if (err) 2433 if (err)
2432 allocated = le16_to_cpu(newex.ee_len); 2434 allocated = ext4_ext_get_actual_len(&newex);
2433 else 2435 else
2434 allocated = max_blocks; 2436 allocated = max_blocks;
2435 2437
@@ -2461,7 +2463,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
2461 * but otherwise we'd need to call it every free() */ 2463 * but otherwise we'd need to call it every free() */
2462 ext4_mb_discard_inode_preallocations(inode); 2464 ext4_mb_discard_inode_preallocations(inode);
2463 ext4_free_blocks(handle, inode, ext_pblock(&newex), 2465 ext4_free_blocks(handle, inode, ext_pblock(&newex),
2464 le16_to_cpu(newex.ee_len), 0); 2466 ext4_ext_get_actual_len(&newex), 0);
2465 goto out2; 2467 goto out2;
2466 } 2468 }
2467 2469
@@ -2470,7 +2472,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
2470 2472
2471 /* previous routine could use block we allocated */ 2473 /* previous routine could use block we allocated */
2472 newblock = ext_pblock(&newex); 2474 newblock = ext_pblock(&newex);
2473 allocated = le16_to_cpu(newex.ee_len); 2475 allocated = ext4_ext_get_actual_len(&newex);
2474outnew: 2476outnew:
2475 __set_bit(BH_New, &bh_result->b_state); 2477 __set_bit(BH_New, &bh_result->b_state);
2476 2478