f2fs: avoid variable length array
Instead of using variable length array, this patch let preallocate memory for them. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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parent
29e7043f40
commit
60a3b782b1
3 changed files with 10 additions and 2 deletions
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@ -142,6 +142,7 @@ static void update_mem_info(struct f2fs_sb_info *sbi)
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si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
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si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
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si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
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si->base_mem += SIT_VBLOCK_MAP_SIZE;
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if (sbi->segs_per_sec > 1)
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si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
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si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
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@ -505,7 +505,7 @@ static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
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unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
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unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
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unsigned long dmap[entries];
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unsigned long *dmap = SIT_I(sbi)->tmp_map;
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unsigned int start = 0, end = -1;
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bool force = (cpc->reason == CP_DISCARD);
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int i;
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@ -924,7 +924,7 @@ static void __next_free_blkoff(struct f2fs_sb_info *sbi,
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{
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struct seg_entry *se = get_seg_entry(sbi, seg->segno);
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int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
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unsigned long target_map[entries];
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unsigned long *target_map = SIT_I(sbi)->tmp_map;
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unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
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unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
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int i, pos;
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@ -1855,6 +1855,10 @@ static int build_sit_info(struct f2fs_sb_info *sbi)
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return -ENOMEM;
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}
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sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
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if (!sit_i->tmp_map)
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return -ENOMEM;
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if (sbi->segs_per_sec > 1) {
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sit_i->sec_entries = vzalloc(MAIN_SECS(sbi) *
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sizeof(struct sec_entry));
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@ -2236,6 +2240,8 @@ static void destroy_sit_info(struct f2fs_sb_info *sbi)
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kfree(sit_i->sentries[start].ckpt_valid_map);
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}
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}
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kfree(sit_i->tmp_map);
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vfree(sit_i->sentries);
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vfree(sit_i->sec_entries);
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kfree(sit_i->dirty_sentries_bitmap);
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@ -189,6 +189,7 @@ struct sit_info {
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char *sit_bitmap; /* SIT bitmap pointer */
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unsigned int bitmap_size; /* SIT bitmap size */
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unsigned long *tmp_map; /* bitmap for temporal use */
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unsigned long *dirty_sentries_bitmap; /* bitmap for dirty sentries */
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unsigned int dirty_sentries; /* # of dirty sentries */
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unsigned int sents_per_block; /* # of SIT entries per block */
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