diff options
| -rw-r--r-- | fs/f2fs/segment.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 86dc289..fa284d3 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -139,27 +139,33 @@ static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) void clear_prefree_segments(struct f2fs_sb_info *sbi) { struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); - unsigned int segno = -1; + unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; unsigned int total_segs = TOTAL_SEGS(sbi); + unsigned int start = 0, end = -1; mutex_lock(&dirty_i->seglist_lock); + while (1) { - segno = find_next_bit(dirty_i->dirty_segmap[PRE], total_segs, - segno + 1); - if (segno >= total_segs) + int i; + start = find_next_bit(prefree_map, total_segs, end + 1); + if (start >= total_segs) break; + end = find_next_zero_bit(prefree_map, total_segs, start + 1); + + for (i = start; i < end; i++) + clear_bit(i, prefree_map); + + dirty_i->nr_dirty[PRE] -= end - start; + + if (!test_opt(sbi, DISCARD)) + continue; - if (test_and_clear_bit(segno, dirty_i->dirty_segmap[PRE])) - dirty_i->nr_dirty[PRE]--; - - /* Let's use trim */ - if (test_opt(sbi, DISCARD)) - blkdev_issue_discard(sbi->sb->s_bdev, - START_BLOCK(sbi, segno) << - sbi->log_sectors_per_block, - 1 << (sbi->log_sectors_per_block + - sbi->log_blocks_per_seg), - GFP_NOFS, 0); + blkdev_issue_discard(sbi->sb->s_bdev, + START_BLOCK(sbi, start) << + sbi->log_sectors_per_block, + (1 << (sbi->log_sectors_per_block + + sbi->log_blocks_per_seg)) * (end - start), + GFP_NOFS, 0); } mutex_unlock(&dirty_i->seglist_lock); } |
