Lines Matching full:ac
421 static void ext4_mb_new_preallocation(struct ext4_allocation_context *ac);
423 static bool ext4_mb_good_group(struct ext4_allocation_context *ac,
874 static void ext4_mb_choose_next_group_p2_aligned(struct ext4_allocation_context *ac, in ext4_mb_choose_next_group_p2_aligned() argument
877 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_choose_next_group_p2_aligned()
881 if (ac->ac_status == AC_STATUS_FOUND) in ext4_mb_choose_next_group_p2_aligned()
884 if (unlikely(sbi->s_mb_stats && ac->ac_flags & EXT4_MB_CR_POWER2_ALIGNED_OPTIMIZED)) in ext4_mb_choose_next_group_p2_aligned()
887 for (i = ac->ac_2order; i < MB_NUM_ORDERS(ac->ac_sb); i++) { in ext4_mb_choose_next_group_p2_aligned()
899 if (likely(ext4_mb_good_group(ac, iter->bb_group, CR_POWER2_ALIGNED))) { in ext4_mb_choose_next_group_p2_aligned()
901 ac->ac_flags |= EXT4_MB_CR_POWER2_ALIGNED_OPTIMIZED; in ext4_mb_choose_next_group_p2_aligned()
917 ext4_mb_find_good_group_avg_frag_lists(struct ext4_allocation_context *ac, int order) in ext4_mb_find_good_group_avg_frag_lists() argument
919 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_find_good_group_avg_frag_lists()
923 enum criteria cr = ac->ac_criteria; in ext4_mb_find_good_group_avg_frag_lists()
935 if (likely(ext4_mb_good_group(ac, iter->bb_group, cr))) { in ext4_mb_find_good_group_avg_frag_lists()
948 static void ext4_mb_choose_next_group_goal_fast(struct ext4_allocation_context *ac, in ext4_mb_choose_next_group_goal_fast() argument
951 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_choose_next_group_goal_fast()
955 if (unlikely(ac->ac_flags & EXT4_MB_CR_GOAL_LEN_FAST_OPTIMIZED)) { in ext4_mb_choose_next_group_goal_fast()
960 for (i = mb_avg_fragment_size_order(ac->ac_sb, ac->ac_g_ex.fe_len); in ext4_mb_choose_next_group_goal_fast()
961 i < MB_NUM_ORDERS(ac->ac_sb); i++) { in ext4_mb_choose_next_group_goal_fast()
962 grp = ext4_mb_find_good_group_avg_frag_lists(ac, i); in ext4_mb_choose_next_group_goal_fast()
965 ac->ac_flags |= EXT4_MB_CR_GOAL_LEN_FAST_OPTIMIZED; in ext4_mb_choose_next_group_goal_fast()
978 if (ac->ac_flags & EXT4_MB_HINT_DATA) in ext4_mb_choose_next_group_goal_fast()
993 static void ext4_mb_choose_next_group_best_avail(struct ext4_allocation_context *ac, in ext4_mb_choose_next_group_best_avail() argument
996 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_choose_next_group_best_avail()
1001 if (unlikely(ac->ac_flags & EXT4_MB_CR_BEST_AVAIL_LEN_OPTIMIZED)) { in ext4_mb_choose_next_group_best_avail()
1012 order = fls(ac->ac_g_ex.fe_len) - 1; in ext4_mb_choose_next_group_best_avail()
1013 if (WARN_ON_ONCE(order - 1 > MB_NUM_ORDERS(ac->ac_sb))) in ext4_mb_choose_next_group_best_avail()
1014 order = MB_NUM_ORDERS(ac->ac_sb); in ext4_mb_choose_next_group_best_avail()
1033 if (1 << min_order < ac->ac_o_ex.fe_len) in ext4_mb_choose_next_group_best_avail()
1034 min_order = fls(ac->ac_o_ex.fe_len); in ext4_mb_choose_next_group_best_avail()
1043 ac->ac_g_ex.fe_len = 1 << i; in ext4_mb_choose_next_group_best_avail()
1051 ac->ac_g_ex.fe_len = roundup(ac->ac_g_ex.fe_len, in ext4_mb_choose_next_group_best_avail()
1055 frag_order = mb_avg_fragment_size_order(ac->ac_sb, in ext4_mb_choose_next_group_best_avail()
1056 ac->ac_g_ex.fe_len); in ext4_mb_choose_next_group_best_avail()
1058 grp = ext4_mb_find_good_group_avg_frag_lists(ac, frag_order); in ext4_mb_choose_next_group_best_avail()
1061 ac->ac_flags |= EXT4_MB_CR_BEST_AVAIL_LEN_OPTIMIZED; in ext4_mb_choose_next_group_best_avail()
1067 ac->ac_g_ex.fe_len = ac->ac_orig_goal_len; in ext4_mb_choose_next_group_best_avail()
1071 static inline int should_optimize_scan(struct ext4_allocation_context *ac) in should_optimize_scan() argument
1073 if (unlikely(!test_opt2(ac->ac_sb, MB_OPTIMIZE_SCAN))) in should_optimize_scan()
1075 if (ac->ac_criteria >= CR_GOAL_LEN_SLOW) in should_optimize_scan()
1077 if (!ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS)) in should_optimize_scan()
1098 * @ac Allocation Context
1108 static void ext4_mb_choose_next_group(struct ext4_allocation_context *ac, in ext4_mb_choose_next_group() argument
1111 *new_cr = ac->ac_criteria; in ext4_mb_choose_next_group()
1113 if (!should_optimize_scan(ac)) { in ext4_mb_choose_next_group()
1123 if (ac->ac_groups_linear_remaining) { in ext4_mb_choose_next_group()
1125 ac->ac_groups_linear_remaining--; in ext4_mb_choose_next_group()
1130 ext4_mb_choose_next_group_p2_aligned(ac, new_cr, group); in ext4_mb_choose_next_group()
1132 ext4_mb_choose_next_group_goal_fast(ac, new_cr, group); in ext4_mb_choose_next_group()
1134 ext4_mb_choose_next_group_best_avail(ac, new_cr, group); in ext4_mb_choose_next_group()
2136 static void ext4_mb_use_best_found(struct ext4_allocation_context *ac, in ext4_mb_use_best_found() argument
2139 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_use_best_found()
2142 BUG_ON(ac->ac_b_ex.fe_group != e4b->bd_group); in ext4_mb_use_best_found()
2143 BUG_ON(ac->ac_status == AC_STATUS_FOUND); in ext4_mb_use_best_found()
2145 ac->ac_b_ex.fe_len = min(ac->ac_b_ex.fe_len, ac->ac_g_ex.fe_len); in ext4_mb_use_best_found()
2146 ac->ac_b_ex.fe_logical = ac->ac_g_ex.fe_logical; in ext4_mb_use_best_found()
2147 ret = mb_mark_used(e4b, &ac->ac_b_ex); in ext4_mb_use_best_found()
2151 ac->ac_f_ex = ac->ac_b_ex; in ext4_mb_use_best_found()
2153 ac->ac_status = AC_STATUS_FOUND; in ext4_mb_use_best_found()
2154 ac->ac_tail = ret & 0xffff; in ext4_mb_use_best_found()
2155 ac->ac_buddy = ret >> 16; in ext4_mb_use_best_found()
2164 ac->ac_bitmap_folio = e4b->bd_bitmap_folio; in ext4_mb_use_best_found()
2165 folio_get(ac->ac_bitmap_folio); in ext4_mb_use_best_found()
2166 ac->ac_buddy_folio = e4b->bd_buddy_folio; in ext4_mb_use_best_found()
2167 folio_get(ac->ac_buddy_folio); in ext4_mb_use_best_found()
2169 if (ac->ac_flags & EXT4_MB_STREAM_ALLOC) { in ext4_mb_use_best_found()
2171 sbi->s_mb_last_group = ac->ac_f_ex.fe_group; in ext4_mb_use_best_found()
2172 sbi->s_mb_last_start = ac->ac_f_ex.fe_start; in ext4_mb_use_best_found()
2180 if (ac->ac_o_ex.fe_len < ac->ac_b_ex.fe_len) in ext4_mb_use_best_found()
2181 ext4_mb_new_preallocation(ac); in ext4_mb_use_best_found()
2185 static void ext4_mb_check_limits(struct ext4_allocation_context *ac, in ext4_mb_check_limits() argument
2189 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_check_limits()
2190 struct ext4_free_extent *bex = &ac->ac_b_ex; in ext4_mb_check_limits()
2191 struct ext4_free_extent *gex = &ac->ac_g_ex; in ext4_mb_check_limits()
2193 if (ac->ac_status == AC_STATUS_FOUND) in ext4_mb_check_limits()
2198 if (ac->ac_found > sbi->s_mb_max_to_scan && in ext4_mb_check_limits()
2199 !(ac->ac_flags & EXT4_MB_HINT_FIRST)) { in ext4_mb_check_limits()
2200 ac->ac_status = AC_STATUS_BREAK; in ext4_mb_check_limits()
2210 if (finish_group || ac->ac_found > sbi->s_mb_min_to_scan) in ext4_mb_check_limits()
2211 ext4_mb_use_best_found(ac, e4b); in ext4_mb_check_limits()
2238 static void ext4_mb_measure_extent(struct ext4_allocation_context *ac, in ext4_mb_measure_extent() argument
2242 struct ext4_free_extent *bex = &ac->ac_b_ex; in ext4_mb_measure_extent()
2243 struct ext4_free_extent *gex = &ac->ac_g_ex; in ext4_mb_measure_extent()
2246 BUG_ON(ex->fe_len > EXT4_CLUSTERS_PER_GROUP(ac->ac_sb)); in ext4_mb_measure_extent()
2247 BUG_ON(ex->fe_start >= EXT4_CLUSTERS_PER_GROUP(ac->ac_sb)); in ext4_mb_measure_extent()
2248 BUG_ON(ac->ac_status != AC_STATUS_CONTINUE); in ext4_mb_measure_extent()
2250 ac->ac_found++; in ext4_mb_measure_extent()
2251 ac->ac_cX_found[ac->ac_criteria]++; in ext4_mb_measure_extent()
2256 if (unlikely(ac->ac_flags & EXT4_MB_HINT_FIRST)) { in ext4_mb_measure_extent()
2258 ext4_mb_use_best_found(ac, e4b); in ext4_mb_measure_extent()
2267 ext4_mb_use_best_found(ac, e4b); in ext4_mb_measure_extent()
2295 ext4_mb_check_limits(ac, e4b, 0); in ext4_mb_measure_extent()
2299 void ext4_mb_try_best_found(struct ext4_allocation_context *ac, in ext4_mb_try_best_found() argument
2302 struct ext4_free_extent ex = ac->ac_b_ex; in ext4_mb_try_best_found()
2308 err = ext4_mb_load_buddy(ac->ac_sb, group, e4b); in ext4_mb_try_best_found()
2312 ext4_lock_group(ac->ac_sb, group); in ext4_mb_try_best_found()
2319 ac->ac_b_ex = ex; in ext4_mb_try_best_found()
2320 ext4_mb_use_best_found(ac, e4b); in ext4_mb_try_best_found()
2324 ext4_unlock_group(ac->ac_sb, group); in ext4_mb_try_best_found()
2329 int ext4_mb_find_by_goal(struct ext4_allocation_context *ac, in ext4_mb_find_by_goal() argument
2332 ext4_group_t group = ac->ac_g_ex.fe_group; in ext4_mb_find_by_goal()
2335 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_find_by_goal()
2336 struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group); in ext4_mb_find_by_goal()
2341 if (!(ac->ac_flags & (EXT4_MB_HINT_TRY_GOAL | EXT4_MB_HINT_GOAL_ONLY))) in ext4_mb_find_by_goal()
2346 err = ext4_mb_load_buddy(ac->ac_sb, group, e4b); in ext4_mb_find_by_goal()
2350 ext4_lock_group(ac->ac_sb, group); in ext4_mb_find_by_goal()
2354 max = mb_find_extent(e4b, ac->ac_g_ex.fe_start, in ext4_mb_find_by_goal()
2355 ac->ac_g_ex.fe_len, &ex); in ext4_mb_find_by_goal()
2358 if (max >= ac->ac_g_ex.fe_len && in ext4_mb_find_by_goal()
2359 ac->ac_g_ex.fe_len == EXT4_NUM_B2C(sbi, sbi->s_stripe)) { in ext4_mb_find_by_goal()
2362 start = ext4_grp_offs_to_block(ac->ac_sb, &ex); in ext4_mb_find_by_goal()
2365 ac->ac_found++; in ext4_mb_find_by_goal()
2366 ac->ac_b_ex = ex; in ext4_mb_find_by_goal()
2367 ext4_mb_use_best_found(ac, e4b); in ext4_mb_find_by_goal()
2369 } else if (max >= ac->ac_g_ex.fe_len) { in ext4_mb_find_by_goal()
2371 BUG_ON(ex.fe_group != ac->ac_g_ex.fe_group); in ext4_mb_find_by_goal()
2372 BUG_ON(ex.fe_start != ac->ac_g_ex.fe_start); in ext4_mb_find_by_goal()
2373 ac->ac_found++; in ext4_mb_find_by_goal()
2374 ac->ac_b_ex = ex; in ext4_mb_find_by_goal()
2375 ext4_mb_use_best_found(ac, e4b); in ext4_mb_find_by_goal()
2376 } else if (max > 0 && (ac->ac_flags & EXT4_MB_HINT_MERGE)) { in ext4_mb_find_by_goal()
2380 BUG_ON(ex.fe_group != ac->ac_g_ex.fe_group); in ext4_mb_find_by_goal()
2381 BUG_ON(ex.fe_start != ac->ac_g_ex.fe_start); in ext4_mb_find_by_goal()
2382 ac->ac_found++; in ext4_mb_find_by_goal()
2383 ac->ac_b_ex = ex; in ext4_mb_find_by_goal()
2384 ext4_mb_use_best_found(ac, e4b); in ext4_mb_find_by_goal()
2387 ext4_unlock_group(ac->ac_sb, group); in ext4_mb_find_by_goal()
2398 void ext4_mb_simple_scan_group(struct ext4_allocation_context *ac, in ext4_mb_simple_scan_group() argument
2401 struct super_block *sb = ac->ac_sb; in ext4_mb_simple_scan_group()
2408 BUG_ON(ac->ac_2order <= 0); in ext4_mb_simple_scan_group()
2409 for (i = ac->ac_2order; i < MB_NUM_ORDERS(sb); i++) { in ext4_mb_simple_scan_group()
2420 ext4_mark_group_bitmap_corrupted(ac->ac_sb, in ext4_mb_simple_scan_group()
2423 ext4_grp_locked_error(ac->ac_sb, e4b->bd_group, 0, 0, in ext4_mb_simple_scan_group()
2428 ac->ac_found++; in ext4_mb_simple_scan_group()
2429 ac->ac_cX_found[ac->ac_criteria]++; in ext4_mb_simple_scan_group()
2431 ac->ac_b_ex.fe_len = 1 << i; in ext4_mb_simple_scan_group()
2432 ac->ac_b_ex.fe_start = k << i; in ext4_mb_simple_scan_group()
2433 ac->ac_b_ex.fe_group = e4b->bd_group; in ext4_mb_simple_scan_group()
2435 ext4_mb_use_best_found(ac, e4b); in ext4_mb_simple_scan_group()
2437 BUG_ON(ac->ac_f_ex.fe_len != ac->ac_g_ex.fe_len); in ext4_mb_simple_scan_group()
2452 void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac, in ext4_mb_complex_scan_group() argument
2455 struct super_block *sb = ac->ac_sb; in ext4_mb_complex_scan_group()
2467 while (free && ac->ac_status == AC_STATUS_CONTINUE) { in ext4_mb_complex_scan_group()
2485 if (!ext4_mb_cr_expensive(ac->ac_criteria)) { in ext4_mb_complex_scan_group()
2496 if (freelen < ac->ac_g_ex.fe_len) { in ext4_mb_complex_scan_group()
2503 mb_find_extent(e4b, i, ac->ac_g_ex.fe_len, &ex); in ext4_mb_complex_scan_group()
2521 ext4_mb_measure_extent(ac, &ex, e4b); in ext4_mb_complex_scan_group()
2527 ext4_mb_check_limits(ac, e4b, 1); in ext4_mb_complex_scan_group()
2535 void ext4_mb_scan_aligned(struct ext4_allocation_context *ac, in ext4_mb_scan_aligned() argument
2538 struct super_block *sb = ac->ac_sb; in ext4_mb_scan_aligned()
2562 ac->ac_found++; in ext4_mb_scan_aligned()
2563 ac->ac_cX_found[ac->ac_criteria]++; in ext4_mb_scan_aligned()
2565 ac->ac_b_ex = ex; in ext4_mb_scan_aligned()
2566 ext4_mb_use_best_found(ac, e4b); in ext4_mb_scan_aligned()
2579 static bool ext4_mb_good_group(struct ext4_allocation_context *ac, in ext4_mb_good_group() argument
2583 int flex_size = ext4_flex_bg_size(EXT4_SB(ac->ac_sb)); in ext4_mb_good_group()
2584 struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group); in ext4_mb_good_group()
2601 BUG_ON(ac->ac_2order == 0); in ext4_mb_good_group()
2604 if ((ac->ac_flags & EXT4_MB_HINT_DATA) && in ext4_mb_good_group()
2609 if (free < ac->ac_g_ex.fe_len) in ext4_mb_good_group()
2612 if (ac->ac_2order >= MB_NUM_ORDERS(ac->ac_sb)) in ext4_mb_good_group()
2615 if (grp->bb_largest_free_order < ac->ac_2order) in ext4_mb_good_group()
2621 if ((free / fragments) >= ac->ac_g_ex.fe_len) in ext4_mb_good_group()
2625 if (free >= ac->ac_g_ex.fe_len) in ext4_mb_good_group()
2648 static int ext4_mb_good_group_nolock(struct ext4_allocation_context *ac, in ext4_mb_good_group_nolock() argument
2651 struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group); in ext4_mb_good_group_nolock()
2652 struct super_block *sb = ac->ac_sb; in ext4_mb_good_group_nolock()
2654 bool should_lock = ac->ac_flags & EXT4_MB_STRICT_CHECK; in ext4_mb_good_group_nolock()
2661 atomic64_inc(&sbi->s_bal_cX_groups_considered[ac->ac_criteria]); in ext4_mb_good_group_nolock()
2674 if (cr < CR_ANY_FREE && free < ac->ac_g_ex.fe_len) in ext4_mb_good_group_nolock()
2713 ret = ext4_mb_good_group(ac, group, cr); in ext4_mb_good_group_nolock()
2797 ext4_mb_regular_allocator(struct ext4_allocation_context *ac) in ext4_mb_regular_allocator() argument
2808 sb = ac->ac_sb; in ext4_mb_regular_allocator()
2812 if (!(ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS))) in ext4_mb_regular_allocator()
2815 BUG_ON(ac->ac_status == AC_STATUS_FOUND); in ext4_mb_regular_allocator()
2818 err = ext4_mb_find_by_goal(ac, &e4b); in ext4_mb_regular_allocator()
2819 if (err || ac->ac_status == AC_STATUS_FOUND) in ext4_mb_regular_allocator()
2822 if (unlikely(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY)) in ext4_mb_regular_allocator()
2826 * ac->ac_2order is set only if the fe_len is a power of 2 in ext4_mb_regular_allocator()
2827 * if ac->ac_2order is set we also set criteria to CR_POWER2_ALIGNED in ext4_mb_regular_allocator()
2830 i = fls(ac->ac_g_ex.fe_len); in ext4_mb_regular_allocator()
2831 ac->ac_2order = 0; in ext4_mb_regular_allocator()
2840 if (is_power_of_2(ac->ac_g_ex.fe_len)) in ext4_mb_regular_allocator()
2841 ac->ac_2order = array_index_nospec(i - 1, in ext4_mb_regular_allocator()
2846 if (ac->ac_flags & EXT4_MB_STREAM_ALLOC) { in ext4_mb_regular_allocator()
2849 ac->ac_g_ex.fe_group = sbi->s_mb_last_group; in ext4_mb_regular_allocator()
2850 ac->ac_g_ex.fe_start = sbi->s_mb_last_start; in ext4_mb_regular_allocator()
2859 if (ac->ac_2order) in ext4_mb_regular_allocator()
2862 for (; cr < EXT4_MB_NUM_CRS && ac->ac_status == AC_STATUS_CONTINUE; cr++) { in ext4_mb_regular_allocator()
2863 ac->ac_criteria = cr; in ext4_mb_regular_allocator()
2868 group = ac->ac_g_ex.fe_group; in ext4_mb_regular_allocator()
2869 ac->ac_groups_linear_remaining = sbi->s_mb_max_linear_groups; in ext4_mb_regular_allocator()
2874 ext4_mb_choose_next_group(ac, &new_cr, &group, ngroups)) { in ext4_mb_regular_allocator()
2903 ret = ext4_mb_good_group_nolock(ac, group, cr); in ext4_mb_regular_allocator()
2920 ret = ext4_mb_good_group(ac, group, cr); in ext4_mb_regular_allocator()
2927 ac->ac_groups_scanned++; in ext4_mb_regular_allocator()
2929 ext4_mb_simple_scan_group(ac, &e4b); in ext4_mb_regular_allocator()
2934 !(ac->ac_g_ex.fe_len % in ext4_mb_regular_allocator()
2940 ext4_mb_scan_aligned(ac, &e4b); in ext4_mb_regular_allocator()
2942 if (ac->ac_status == AC_STATUS_CONTINUE) in ext4_mb_regular_allocator()
2943 ext4_mb_complex_scan_group(ac, &e4b); in ext4_mb_regular_allocator()
2949 if (ac->ac_status != AC_STATUS_CONTINUE) in ext4_mb_regular_allocator()
2956 if (i == ngroups && ac->ac_criteria == CR_BEST_AVAIL_LEN) in ext4_mb_regular_allocator()
2959 ac->ac_g_ex.fe_len = ac->ac_orig_goal_len; in ext4_mb_regular_allocator()
2962 if (ac->ac_b_ex.fe_len > 0 && ac->ac_status != AC_STATUS_FOUND && in ext4_mb_regular_allocator()
2963 !(ac->ac_flags & EXT4_MB_HINT_FIRST)) { in ext4_mb_regular_allocator()
2968 ext4_mb_try_best_found(ac, &e4b); in ext4_mb_regular_allocator()
2969 if (ac->ac_status != AC_STATUS_FOUND) { in ext4_mb_regular_allocator()
2977 ac->ac_b_ex.fe_group, ac->ac_b_ex.fe_start, in ext4_mb_regular_allocator()
2978 ac->ac_b_ex.fe_len, lost); in ext4_mb_regular_allocator()
2980 ac->ac_b_ex.fe_group = 0; in ext4_mb_regular_allocator()
2981 ac->ac_b_ex.fe_start = 0; in ext4_mb_regular_allocator()
2982 ac->ac_b_ex.fe_len = 0; in ext4_mb_regular_allocator()
2983 ac->ac_status = AC_STATUS_CONTINUE; in ext4_mb_regular_allocator()
2984 ac->ac_flags |= EXT4_MB_HINT_FIRST; in ext4_mb_regular_allocator()
2990 if (sbi->s_mb_stats && ac->ac_status == AC_STATUS_FOUND) in ext4_mb_regular_allocator()
2991 atomic64_inc(&sbi->s_bal_cX_hits[ac->ac_criteria]); in ext4_mb_regular_allocator()
2993 if (!err && ac->ac_status != AC_STATUS_FOUND && first_err) in ext4_mb_regular_allocator()
2997 ac->ac_b_ex.fe_len, ac->ac_o_ex.fe_len, ac->ac_status, in ext4_mb_regular_allocator()
2998 ac->ac_flags, cr, err); in ext4_mb_regular_allocator()
4084 * Check quota and mark chosen space (ac->ac_b_ex) non-free in bitmaps
4088 ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac, in ext4_mb_mark_diskspace_used() argument
4099 BUG_ON(ac->ac_status != AC_STATUS_FOUND); in ext4_mb_mark_diskspace_used()
4100 BUG_ON(ac->ac_b_ex.fe_len <= 0); in ext4_mb_mark_diskspace_used()
4102 sb = ac->ac_sb; in ext4_mb_mark_diskspace_used()
4105 gdp = ext4_get_group_desc(sb, ac->ac_b_ex.fe_group, NULL); in ext4_mb_mark_diskspace_used()
4108 ext4_debug("using block group %u(%d)\n", ac->ac_b_ex.fe_group, in ext4_mb_mark_diskspace_used()
4111 block = ext4_grp_offs_to_block(sb, &ac->ac_b_ex); in ext4_mb_mark_diskspace_used()
4112 len = EXT4_C2B(sbi, ac->ac_b_ex.fe_len); in ext4_mb_mark_diskspace_used()
4113 if (!ext4_inode_block_valid(ac->ac_inode, block, len)) { in ext4_mb_mark_diskspace_used()
4121 ac->ac_b_ex.fe_group, in ext4_mb_mark_diskspace_used()
4122 ac->ac_b_ex.fe_start, in ext4_mb_mark_diskspace_used()
4123 ac->ac_b_ex.fe_len, in ext4_mb_mark_diskspace_used()
4133 err = ext4_mb_mark_context(handle, sb, true, ac->ac_b_ex.fe_group, in ext4_mb_mark_diskspace_used()
4134 ac->ac_b_ex.fe_start, ac->ac_b_ex.fe_len, in ext4_mb_mark_diskspace_used()
4141 BUG_ON(changed != ac->ac_b_ex.fe_len); in ext4_mb_mark_diskspace_used()
4143 percpu_counter_sub(&sbi->s_freeclusters_counter, ac->ac_b_ex.fe_len); in ext4_mb_mark_diskspace_used()
4147 if (!(ac->ac_flags & EXT4_MB_DELALLOC_RESERVED)) in ext4_mb_mark_diskspace_used()
4213 static void ext4_mb_normalize_group_request(struct ext4_allocation_context *ac) in ext4_mb_normalize_group_request() argument
4215 struct super_block *sb = ac->ac_sb; in ext4_mb_normalize_group_request()
4216 struct ext4_locality_group *lg = ac->ac_lg; in ext4_mb_normalize_group_request()
4219 ac->ac_g_ex.fe_len = EXT4_SB(sb)->s_mb_group_prealloc; in ext4_mb_normalize_group_request()
4220 mb_debug(sb, "goal %u blocks for locality group\n", ac->ac_g_ex.fe_len); in ext4_mb_normalize_group_request()
4242 ext4_mb_pa_assert_overlap(struct ext4_allocation_context *ac, in ext4_mb_pa_assert_overlap() argument
4245 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_pa_assert_overlap()
4246 struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); in ext4_mb_pa_assert_overlap()
4269 * Given an allocation context "ac" and a range "start", "end", check
4274 * ac allocation context
4279 ext4_mb_pa_adjust_overlap(struct ext4_allocation_context *ac, in ext4_mb_pa_adjust_overlap() argument
4282 struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); in ext4_mb_pa_adjust_overlap()
4283 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_pa_adjust_overlap()
4301 iter = ext4_mb_pa_rb_next_iter(ac->ac_o_ex.fe_logical, in ext4_mb_pa_adjust_overlap()
4311 BUG_ON(!(ac->ac_o_ex.fe_logical >= tmp_pa_end || in ext4_mb_pa_adjust_overlap()
4312 ac->ac_o_ex.fe_logical < tmp_pa_start)); in ext4_mb_pa_adjust_overlap()
4321 if (tmp_pa->pa_lstart < ac->ac_o_ex.fe_logical) { in ext4_mb_pa_adjust_overlap()
4387 BUG_ON(left_pa_end > ac->ac_o_ex.fe_logical); in ext4_mb_pa_adjust_overlap()
4392 BUG_ON(right_pa_start <= ac->ac_o_ex.fe_logical); in ext4_mb_pa_adjust_overlap()
4408 ext4_mb_pa_assert_overlap(ac, new_start, new_end); in ext4_mb_pa_adjust_overlap()
4419 ext4_mb_normalize_request(struct ext4_allocation_context *ac, in ext4_mb_normalize_request() argument
4422 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_normalize_request()
4431 if (!(ac->ac_flags & EXT4_MB_HINT_DATA)) in ext4_mb_normalize_request()
4435 if (unlikely(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY)) in ext4_mb_normalize_request()
4440 if (ac->ac_flags & EXT4_MB_HINT_NOPREALLOC) in ext4_mb_normalize_request()
4443 if (ac->ac_flags & EXT4_MB_HINT_GROUP_ALLOC) { in ext4_mb_normalize_request()
4444 ext4_mb_normalize_group_request(ac); in ext4_mb_normalize_request()
4448 bsbits = ac->ac_sb->s_blocksize_bits; in ext4_mb_normalize_request()
4452 size = extent_logical_end(sbi, &ac->ac_o_ex); in ext4_mb_normalize_request()
4454 if (size < i_size_read(ac->ac_inode)) in ext4_mb_normalize_request()
4455 size = i_size_read(ac->ac_inode); in ext4_mb_normalize_request()
4482 start_off = ((loff_t)ac->ac_o_ex.fe_logical >> in ext4_mb_normalize_request()
4486 start_off = ((loff_t)ac->ac_o_ex.fe_logical >> in ext4_mb_normalize_request()
4489 } else if (NRL_CHECK_SIZE(EXT4_C2B(sbi, ac->ac_o_ex.fe_len), in ext4_mb_normalize_request()
4491 start_off = ((loff_t)ac->ac_o_ex.fe_logical >> in ext4_mb_normalize_request()
4495 start_off = (loff_t) ac->ac_o_ex.fe_logical << bsbits; in ext4_mb_normalize_request()
4497 ac->ac_o_ex.fe_len) << bsbits; in ext4_mb_normalize_request()
4508 start = max(start, rounddown(ac->ac_o_ex.fe_logical, in ext4_mb_normalize_request()
4509 (ext4_lblk_t)EXT4_BLOCKS_PER_GROUP(ac->ac_sb))); in ext4_mb_normalize_request()
4527 if (size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb)) in ext4_mb_normalize_request()
4528 size = EXT4_BLOCKS_PER_GROUP(ac->ac_sb); in ext4_mb_normalize_request()
4532 ext4_mb_pa_adjust_overlap(ac, &start, &end); in ext4_mb_normalize_request()
4540 * ac->ac_o_ex.fe_logical & fe_len should always lie within "start" and in ext4_mb_normalize_request()
4551 if (start + size <= ac->ac_o_ex.fe_logical || in ext4_mb_normalize_request()
4552 start > ac->ac_o_ex.fe_logical) { in ext4_mb_normalize_request()
4553 ext4_msg(ac->ac_sb, KERN_ERR, in ext4_mb_normalize_request()
4556 (unsigned long) ac->ac_o_ex.fe_logical); in ext4_mb_normalize_request()
4559 BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb)); in ext4_mb_normalize_request()
4565 ac->ac_g_ex.fe_logical = start; in ext4_mb_normalize_request()
4566 ac->ac_g_ex.fe_len = EXT4_NUM_B2C(sbi, size); in ext4_mb_normalize_request()
4567 ac->ac_orig_goal_len = ac->ac_g_ex.fe_len; in ext4_mb_normalize_request()
4574 ext4_get_group_no_and_offset(ac->ac_sb, ar->pright - size, in ext4_mb_normalize_request()
4575 &ac->ac_g_ex.fe_group, in ext4_mb_normalize_request()
4576 &ac->ac_g_ex.fe_start); in ext4_mb_normalize_request()
4577 ac->ac_flags |= EXT4_MB_HINT_TRY_GOAL; in ext4_mb_normalize_request()
4582 ext4_get_group_no_and_offset(ac->ac_sb, ar->pleft + 1, in ext4_mb_normalize_request()
4583 &ac->ac_g_ex.fe_group, in ext4_mb_normalize_request()
4584 &ac->ac_g_ex.fe_start); in ext4_mb_normalize_request()
4585 ac->ac_flags |= EXT4_MB_HINT_TRY_GOAL; in ext4_mb_normalize_request()
4588 mb_debug(ac->ac_sb, "goal: %lld(was %lld) blocks at %u\n", size, in ext4_mb_normalize_request()
4592 static void ext4_mb_collect_stats(struct ext4_allocation_context *ac) in ext4_mb_collect_stats() argument
4594 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_collect_stats()
4596 if (sbi->s_mb_stats && ac->ac_g_ex.fe_len >= 1) { in ext4_mb_collect_stats()
4598 atomic_add(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated); in ext4_mb_collect_stats()
4599 if (ac->ac_b_ex.fe_len >= ac->ac_o_ex.fe_len) in ext4_mb_collect_stats()
4602 atomic_add(ac->ac_found, &sbi->s_bal_ex_scanned); in ext4_mb_collect_stats()
4604 atomic_add(ac->ac_cX_found[i], &sbi->s_bal_cX_ex_scanned[i]); in ext4_mb_collect_stats()
4607 atomic_add(ac->ac_groups_scanned, &sbi->s_bal_groups_scanned); in ext4_mb_collect_stats()
4608 if (ac->ac_g_ex.fe_start == ac->ac_b_ex.fe_start && in ext4_mb_collect_stats()
4609 ac->ac_g_ex.fe_group == ac->ac_b_ex.fe_group) in ext4_mb_collect_stats()
4612 if (ac->ac_f_ex.fe_len == ac->ac_orig_goal_len) in ext4_mb_collect_stats()
4615 if (ac->ac_found > sbi->s_mb_max_to_scan) in ext4_mb_collect_stats()
4619 if (ac->ac_op == EXT4_MB_HISTORY_ALLOC) in ext4_mb_collect_stats()
4620 trace_ext4_mballoc_alloc(ac); in ext4_mb_collect_stats()
4622 trace_ext4_mballoc_prealloc(ac); in ext4_mb_collect_stats()
4629 * zeroed out ac->ac_b_ex.fe_len, so group_pa->pa_free is not changed.
4631 static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac) in ext4_discard_allocated_blocks() argument
4633 struct ext4_prealloc_space *pa = ac->ac_pa; in ext4_discard_allocated_blocks()
4638 if (ac->ac_f_ex.fe_len == 0) in ext4_discard_allocated_blocks()
4640 err = ext4_mb_load_buddy(ac->ac_sb, ac->ac_f_ex.fe_group, &e4b); in ext4_discard_allocated_blocks()
4649 ext4_lock_group(ac->ac_sb, ac->ac_f_ex.fe_group); in ext4_discard_allocated_blocks()
4650 mb_free_blocks(ac->ac_inode, &e4b, ac->ac_f_ex.fe_start, in ext4_discard_allocated_blocks()
4651 ac->ac_f_ex.fe_len); in ext4_discard_allocated_blocks()
4652 ext4_unlock_group(ac->ac_sb, ac->ac_f_ex.fe_group); in ext4_discard_allocated_blocks()
4658 pa->pa_free += ac->ac_b_ex.fe_len; in ext4_discard_allocated_blocks()
4666 static void ext4_mb_use_inode_pa(struct ext4_allocation_context *ac, in ext4_mb_use_inode_pa() argument
4669 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_use_inode_pa()
4675 start = pa->pa_pstart + (ac->ac_o_ex.fe_logical - pa->pa_lstart); in ext4_mb_use_inode_pa()
4677 start + EXT4_C2B(sbi, ac->ac_o_ex.fe_len)); in ext4_mb_use_inode_pa()
4679 ext4_get_group_no_and_offset(ac->ac_sb, start, &ac->ac_b_ex.fe_group, in ext4_mb_use_inode_pa()
4680 &ac->ac_b_ex.fe_start); in ext4_mb_use_inode_pa()
4681 ac->ac_b_ex.fe_len = len; in ext4_mb_use_inode_pa()
4682 ac->ac_status = AC_STATUS_FOUND; in ext4_mb_use_inode_pa()
4683 ac->ac_pa = pa; in ext4_mb_use_inode_pa()
4688 BUG_ON(ac->ac_b_ex.fe_len <= 0); in ext4_mb_use_inode_pa()
4691 mb_debug(ac->ac_sb, "use %llu/%d from inode pa %p\n", start, len, pa); in ext4_mb_use_inode_pa()
4697 static void ext4_mb_use_group_pa(struct ext4_allocation_context *ac, in ext4_mb_use_group_pa() argument
4700 unsigned int len = ac->ac_o_ex.fe_len; in ext4_mb_use_group_pa()
4702 ext4_get_group_no_and_offset(ac->ac_sb, pa->pa_pstart, in ext4_mb_use_group_pa()
4703 &ac->ac_b_ex.fe_group, in ext4_mb_use_group_pa()
4704 &ac->ac_b_ex.fe_start); in ext4_mb_use_group_pa()
4705 ac->ac_b_ex.fe_len = len; in ext4_mb_use_group_pa()
4706 ac->ac_status = AC_STATUS_FOUND; in ext4_mb_use_group_pa()
4707 ac->ac_pa = pa; in ext4_mb_use_group_pa()
4715 mb_debug(ac->ac_sb, "use %u/%u from group pa %p\n", in ext4_mb_use_group_pa()
4752 ext4_mb_pa_goal_check(struct ext4_allocation_context *ac, in ext4_mb_pa_goal_check() argument
4755 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_pa_goal_check()
4758 if (likely(!(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY))) in ext4_mb_pa_goal_check()
4768 (ac->ac_g_ex.fe_logical - pa->pa_lstart); in ext4_mb_pa_goal_check()
4769 if (ext4_grp_offs_to_block(ac->ac_sb, &ac->ac_g_ex) != start) in ext4_mb_pa_goal_check()
4772 if (ac->ac_g_ex.fe_len > pa->pa_len - in ext4_mb_pa_goal_check()
4773 EXT4_B2C(sbi, ac->ac_g_ex.fe_logical - pa->pa_lstart)) in ext4_mb_pa_goal_check()
4783 ext4_mb_use_preallocated(struct ext4_allocation_context *ac) in ext4_mb_use_preallocated() argument
4785 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_use_preallocated()
4787 struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); in ext4_mb_use_preallocated()
4794 if (!(ac->ac_flags & EXT4_MB_HINT_DATA)) in ext4_mb_use_preallocated()
4817 iter = ext4_mb_pa_rb_next_iter(ac->ac_o_ex.fe_logical, in ext4_mb_use_preallocated()
4828 if (tmp_pa->pa_lstart > ac->ac_o_ex.fe_logical) { in ext4_mb_use_preallocated()
4845 BUG_ON(!(tmp_pa && tmp_pa->pa_lstart <= ac->ac_o_ex.fe_logical)); in ext4_mb_use_preallocated()
4877 BUG_ON(!(tmp_pa && tmp_pa->pa_lstart <= ac->ac_o_ex.fe_logical)); in ext4_mb_use_preallocated()
4885 if (ac->ac_o_ex.fe_logical >= pa_logical_end(sbi, tmp_pa)) { in ext4_mb_use_preallocated()
4891 if (!(ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS)) && in ext4_mb_use_preallocated()
4902 if (tmp_pa->pa_free && likely(ext4_mb_pa_goal_check(ac, tmp_pa))) { in ext4_mb_use_preallocated()
4904 ext4_mb_use_inode_pa(ac, tmp_pa); in ext4_mb_use_preallocated()
4943 if (!(ac->ac_flags & EXT4_MB_HINT_GROUP_ALLOC)) in ext4_mb_use_preallocated()
4947 lg = ac->ac_lg; in ext4_mb_use_preallocated()
4950 order = fls(ac->ac_o_ex.fe_len) - 1; in ext4_mb_use_preallocated()
4955 goal_block = ext4_grp_offs_to_block(ac->ac_sb, &ac->ac_g_ex); in ext4_mb_use_preallocated()
4966 tmp_pa->pa_free >= ac->ac_o_ex.fe_len) { in ext4_mb_use_preallocated()
4976 ext4_mb_use_group_pa(ac, cpa); in ext4_mb_use_preallocated()
5066 static void ext4_mb_put_pa(struct ext4_allocation_context *ac, in ext4_mb_put_pa() argument
5071 struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); in ext4_mb_put_pa()
5158 ext4_mb_new_inode_pa(struct ext4_allocation_context *ac) in ext4_mb_new_inode_pa() argument
5160 struct super_block *sb = ac->ac_sb; in ext4_mb_new_inode_pa()
5167 BUG_ON(ac->ac_o_ex.fe_len >= ac->ac_b_ex.fe_len); in ext4_mb_new_inode_pa()
5168 BUG_ON(ac->ac_status != AC_STATUS_FOUND); in ext4_mb_new_inode_pa()
5169 BUG_ON(!S_ISREG(ac->ac_inode->i_mode)); in ext4_mb_new_inode_pa()
5170 BUG_ON(ac->ac_pa == NULL); in ext4_mb_new_inode_pa()
5172 pa = ac->ac_pa; in ext4_mb_new_inode_pa()
5174 if (ac->ac_b_ex.fe_len < ac->ac_orig_goal_len) { in ext4_mb_new_inode_pa()
5176 .fe_logical = ac->ac_g_ex.fe_logical, in ext4_mb_new_inode_pa()
5177 .fe_len = ac->ac_orig_goal_len, in ext4_mb_new_inode_pa()
5180 loff_t o_ex_end = extent_logical_end(sbi, &ac->ac_o_ex); in ext4_mb_new_inode_pa()
5190 BUG_ON(ac->ac_g_ex.fe_logical > ac->ac_o_ex.fe_logical); in ext4_mb_new_inode_pa()
5191 BUG_ON(ac->ac_g_ex.fe_len < ac->ac_o_ex.fe_len); in ext4_mb_new_inode_pa()
5204 ex.fe_len = ac->ac_b_ex.fe_len; in ext4_mb_new_inode_pa()
5207 if (ac->ac_o_ex.fe_logical >= ex.fe_logical) in ext4_mb_new_inode_pa()
5210 ex.fe_logical = ac->ac_g_ex.fe_logical; in ext4_mb_new_inode_pa()
5214 ex.fe_logical = ac->ac_o_ex.fe_logical; in ext4_mb_new_inode_pa()
5216 ac->ac_b_ex.fe_logical = ex.fe_logical; in ext4_mb_new_inode_pa()
5218 BUG_ON(ac->ac_o_ex.fe_logical < ac->ac_b_ex.fe_logical); in ext4_mb_new_inode_pa()
5222 pa->pa_lstart = ac->ac_b_ex.fe_logical; in ext4_mb_new_inode_pa()
5223 pa->pa_pstart = ext4_grp_offs_to_block(sb, &ac->ac_b_ex); in ext4_mb_new_inode_pa()
5224 pa->pa_len = ac->ac_b_ex.fe_len; in ext4_mb_new_inode_pa()
5233 trace_ext4_mb_new_inode_pa(ac, pa); in ext4_mb_new_inode_pa()
5236 ext4_mb_use_inode_pa(ac, pa); in ext4_mb_new_inode_pa()
5238 ei = EXT4_I(ac->ac_inode); in ext4_mb_new_inode_pa()
5239 grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group); in ext4_mb_new_inode_pa()
5244 pa->pa_inode = ac->ac_inode; in ext4_mb_new_inode_pa()
5258 ext4_mb_new_group_pa(struct ext4_allocation_context *ac) in ext4_mb_new_group_pa() argument
5260 struct super_block *sb = ac->ac_sb; in ext4_mb_new_group_pa()
5266 BUG_ON(ac->ac_o_ex.fe_len >= ac->ac_b_ex.fe_len); in ext4_mb_new_group_pa()
5267 BUG_ON(ac->ac_status != AC_STATUS_FOUND); in ext4_mb_new_group_pa()
5268 BUG_ON(!S_ISREG(ac->ac_inode->i_mode)); in ext4_mb_new_group_pa()
5269 BUG_ON(ac->ac_pa == NULL); in ext4_mb_new_group_pa()
5271 pa = ac->ac_pa; in ext4_mb_new_group_pa()
5273 pa->pa_pstart = ext4_grp_offs_to_block(sb, &ac->ac_b_ex); in ext4_mb_new_group_pa()
5275 pa->pa_len = ac->ac_b_ex.fe_len; in ext4_mb_new_group_pa()
5285 trace_ext4_mb_new_group_pa(ac, pa); in ext4_mb_new_group_pa()
5287 ext4_mb_use_group_pa(ac, pa); in ext4_mb_new_group_pa()
5290 grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group); in ext4_mb_new_group_pa()
5293 lg = ac->ac_lg; in ext4_mb_new_group_pa()
5307 static void ext4_mb_new_preallocation(struct ext4_allocation_context *ac) in ext4_mb_new_preallocation() argument
5309 if (ac->ac_flags & EXT4_MB_HINT_GROUP_ALLOC) in ext4_mb_new_preallocation()
5310 ext4_mb_new_group_pa(ac); in ext4_mb_new_preallocation()
5312 ext4_mb_new_inode_pa(ac); in ext4_mb_new_preallocation()
5622 static int ext4_mb_pa_alloc(struct ext4_allocation_context *ac) in ext4_mb_pa_alloc() argument
5631 ac->ac_pa = pa; in ext4_mb_pa_alloc()
5635 static void ext4_mb_pa_put_free(struct ext4_allocation_context *ac) in ext4_mb_pa_put_free() argument
5637 struct ext4_prealloc_space *pa = ac->ac_pa; in ext4_mb_pa_put_free()
5640 ac->ac_pa = NULL; in ext4_mb_pa_put_free()
5686 static void ext4_mb_show_ac(struct ext4_allocation_context *ac) in ext4_mb_show_ac() argument
5688 struct super_block *sb = ac->ac_sb; in ext4_mb_show_ac()
5696 ac->ac_status, ac->ac_flags); in ext4_mb_show_ac()
5700 (unsigned long)ac->ac_o_ex.fe_group, in ext4_mb_show_ac()
5701 (unsigned long)ac->ac_o_ex.fe_start, in ext4_mb_show_ac()
5702 (unsigned long)ac->ac_o_ex.fe_len, in ext4_mb_show_ac()
5703 (unsigned long)ac->ac_o_ex.fe_logical, in ext4_mb_show_ac()
5704 (unsigned long)ac->ac_g_ex.fe_group, in ext4_mb_show_ac()
5705 (unsigned long)ac->ac_g_ex.fe_start, in ext4_mb_show_ac()
5706 (unsigned long)ac->ac_g_ex.fe_len, in ext4_mb_show_ac()
5707 (unsigned long)ac->ac_g_ex.fe_logical, in ext4_mb_show_ac()
5708 (unsigned long)ac->ac_b_ex.fe_group, in ext4_mb_show_ac()
5709 (unsigned long)ac->ac_b_ex.fe_start, in ext4_mb_show_ac()
5710 (unsigned long)ac->ac_b_ex.fe_len, in ext4_mb_show_ac()
5711 (unsigned long)ac->ac_b_ex.fe_logical, in ext4_mb_show_ac()
5712 (int)ac->ac_criteria); in ext4_mb_show_ac()
5713 mb_debug(sb, "%u found", ac->ac_found); in ext4_mb_show_ac()
5714 mb_debug(sb, "used pa: %s, ", str_yes_no(ac->ac_pa)); in ext4_mb_show_ac()
5715 if (ac->ac_pa) in ext4_mb_show_ac()
5716 mb_debug(sb, "pa_type %s\n", ac->ac_pa->pa_type == MB_GROUP_PA ? in ext4_mb_show_ac()
5724 static inline void ext4_mb_show_ac(struct ext4_allocation_context *ac) in ext4_mb_show_ac() argument
5726 ext4_mb_show_pa(ac->ac_sb); in ext4_mb_show_ac()
5737 static void ext4_mb_group_or_file(struct ext4_allocation_context *ac) in ext4_mb_group_or_file() argument
5739 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_group_or_file()
5740 int bsbits = ac->ac_sb->s_blocksize_bits; in ext4_mb_group_or_file()
5744 if (!(ac->ac_flags & EXT4_MB_HINT_DATA)) in ext4_mb_group_or_file()
5747 if (unlikely(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY)) in ext4_mb_group_or_file()
5752 size = extent_logical_end(sbi, &ac->ac_o_ex); in ext4_mb_group_or_file()
5753 isize = (i_size_read(ac->ac_inode) + ac->ac_sb->s_blocksize - 1) in ext4_mb_group_or_file()
5758 !inode_is_open_for_write(ac->ac_inode)) in ext4_mb_group_or_file()
5768 ac->ac_flags |= EXT4_MB_STREAM_ALLOC; in ext4_mb_group_or_file()
5770 ac->ac_flags |= EXT4_MB_HINT_NOPREALLOC; in ext4_mb_group_or_file()
5774 BUG_ON(ac->ac_lg != NULL); in ext4_mb_group_or_file()
5780 ac->ac_lg = raw_cpu_ptr(sbi->s_locality_groups); in ext4_mb_group_or_file()
5783 ac->ac_flags |= EXT4_MB_HINT_GROUP_ALLOC; in ext4_mb_group_or_file()
5786 mutex_lock(&ac->ac_lg->lg_mutex); in ext4_mb_group_or_file()
5790 ext4_mb_initialize_context(struct ext4_allocation_context *ac, in ext4_mb_initialize_context() argument
5816 ac->ac_b_ex.fe_logical = EXT4_LBLK_CMASK(sbi, ar->logical); in ext4_mb_initialize_context()
5817 ac->ac_status = AC_STATUS_CONTINUE; in ext4_mb_initialize_context()
5818 ac->ac_sb = sb; in ext4_mb_initialize_context()
5819 ac->ac_inode = ar->inode; in ext4_mb_initialize_context()
5820 ac->ac_o_ex.fe_logical = ac->ac_b_ex.fe_logical; in ext4_mb_initialize_context()
5821 ac->ac_o_ex.fe_group = group; in ext4_mb_initialize_context()
5822 ac->ac_o_ex.fe_start = block; in ext4_mb_initialize_context()
5823 ac->ac_o_ex.fe_len = len; in ext4_mb_initialize_context()
5824 ac->ac_g_ex = ac->ac_o_ex; in ext4_mb_initialize_context()
5825 ac->ac_orig_goal_len = ac->ac_g_ex.fe_len; in ext4_mb_initialize_context()
5826 ac->ac_flags = ar->flags; in ext4_mb_initialize_context()
5830 ext4_mb_group_or_file(ac); in ext4_mb_initialize_context()
5832 mb_debug(sb, "init ac: %u blocks @ %u, goal %u, flags 0x%x, 2^%d, " in ext4_mb_initialize_context()
5835 (unsigned) ar->goal, ac->ac_flags, ac->ac_2order, in ext4_mb_initialize_context()
5925 static void ext4_mb_add_n_trim(struct ext4_allocation_context *ac) in ext4_mb_add_n_trim() argument
5928 struct super_block *sb = ac->ac_sb; in ext4_mb_add_n_trim()
5929 struct ext4_locality_group *lg = ac->ac_lg; in ext4_mb_add_n_trim()
5930 struct ext4_prealloc_space *tmp_pa, *pa = ac->ac_pa; in ext4_mb_add_n_trim()
5973 static void ext4_mb_release_context(struct ext4_allocation_context *ac) in ext4_mb_release_context() argument
5975 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); in ext4_mb_release_context()
5976 struct ext4_prealloc_space *pa = ac->ac_pa; in ext4_mb_release_context()
5981 pa->pa_pstart += EXT4_C2B(sbi, ac->ac_b_ex.fe_len); in ext4_mb_release_context()
5982 pa->pa_lstart += EXT4_C2B(sbi, ac->ac_b_ex.fe_len); in ext4_mb_release_context()
5983 pa->pa_free -= ac->ac_b_ex.fe_len; in ext4_mb_release_context()
5984 pa->pa_len -= ac->ac_b_ex.fe_len; in ext4_mb_release_context()
5997 ext4_mb_add_n_trim(ac); in ext4_mb_release_context()
6001 ext4_mb_put_pa(ac, ac->ac_sb, pa); in ext4_mb_release_context()
6003 if (ac->ac_bitmap_folio) in ext4_mb_release_context()
6004 folio_put(ac->ac_bitmap_folio); in ext4_mb_release_context()
6005 if (ac->ac_buddy_folio) in ext4_mb_release_context()
6006 folio_put(ac->ac_buddy_folio); in ext4_mb_release_context()
6007 if (ac->ac_flags & EXT4_MB_HINT_GROUP_ALLOC) in ext4_mb_release_context()
6008 mutex_unlock(&ac->ac_lg->lg_mutex); in ext4_mb_release_context()
6009 ext4_mb_collect_stats(ac); in ext4_mb_release_context()
6040 struct ext4_allocation_context *ac, u64 *seq) in ext4_mb_discard_preallocations_should_retry() argument
6046 freed = ext4_mb_discard_preallocations(sb, ac->ac_o_ex.fe_len); in ext4_mb_discard_preallocations_should_retry()
6052 if (!(ac->ac_flags & EXT4_MB_STRICT_CHECK) || seq_retry != *seq) { in ext4_mb_discard_preallocations_should_retry()
6053 ac->ac_flags |= EXT4_MB_STRICT_CHECK; in ext4_mb_discard_preallocations_should_retry()
6139 struct ext4_allocation_context *ac = NULL; in ext4_mb_new_blocks() local
6197 ac = kmem_cache_zalloc(ext4_ac_cachep, GFP_NOFS); in ext4_mb_new_blocks()
6198 if (!ac) { in ext4_mb_new_blocks()
6204 ext4_mb_initialize_context(ac, ar); in ext4_mb_new_blocks()
6206 ac->ac_op = EXT4_MB_HISTORY_PREALLOC; in ext4_mb_new_blocks()
6208 if (!ext4_mb_use_preallocated(ac)) { in ext4_mb_new_blocks()
6209 ac->ac_op = EXT4_MB_HISTORY_ALLOC; in ext4_mb_new_blocks()
6210 ext4_mb_normalize_request(ac, ar); in ext4_mb_new_blocks()
6212 *errp = ext4_mb_pa_alloc(ac); in ext4_mb_new_blocks()
6217 *errp = ext4_mb_regular_allocator(ac); in ext4_mb_new_blocks()
6221 * ac->ac_status == AC_STATUS_FOUND. in ext4_mb_new_blocks()
6222 * And error from above mean ac->ac_status != AC_STATUS_FOUND in ext4_mb_new_blocks()
6226 ext4_mb_pa_put_free(ac); in ext4_mb_new_blocks()
6227 ext4_discard_allocated_blocks(ac); in ext4_mb_new_blocks()
6230 if (ac->ac_status == AC_STATUS_FOUND && in ext4_mb_new_blocks()
6231 ac->ac_o_ex.fe_len >= ac->ac_f_ex.fe_len) in ext4_mb_new_blocks()
6232 ext4_mb_pa_put_free(ac); in ext4_mb_new_blocks()
6234 if (likely(ac->ac_status == AC_STATUS_FOUND)) { in ext4_mb_new_blocks()
6235 *errp = ext4_mb_mark_diskspace_used(ac, handle, reserv_clstrs); in ext4_mb_new_blocks()
6237 ext4_discard_allocated_blocks(ac); in ext4_mb_new_blocks()
6240 block = ext4_grp_offs_to_block(sb, &ac->ac_b_ex); in ext4_mb_new_blocks()
6241 ar->len = ac->ac_b_ex.fe_len; in ext4_mb_new_blocks()
6245 ext4_mb_discard_preallocations_should_retry(sb, ac, &seq)) in ext4_mb_new_blocks()
6251 ext4_mb_pa_put_free(ac); in ext4_mb_new_blocks()
6257 ac->ac_b_ex.fe_len = 0; in ext4_mb_new_blocks()
6259 ext4_mb_show_ac(ac); in ext4_mb_new_blocks()
6261 ext4_mb_release_context(ac); in ext4_mb_new_blocks()
6262 kmem_cache_free(ext4_ac_cachep, ac); in ext4_mb_new_blocks()