f2fs: fix to return exact trimmed size
Now, we add all the candidates for trim commands and then finally issue discard commands. So, we should count the trimmed size in back-end. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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@ -544,7 +544,6 @@ static void __add_discard_entry(struct f2fs_sb_info *sbi,
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list_add_tail(&new->list, head);
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done:
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SM_I(sbi)->nr_discards += end - start;
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cpc->trimmed += end - start;
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}
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static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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@ -646,6 +645,7 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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if (cpc->reason == CP_DISCARD && entry->len < cpc->trim_minlen)
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goto skip;
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f2fs_issue_discard(sbi, entry->blkaddr, entry->len);
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cpc->trimmed += entry->len;
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skip:
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list_del(&entry->list);
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SM_I(sbi)->nr_discards -= entry->len;
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