diff options
Diffstat (limited to 'fs/f2fs/gc.h')
| -rw-r--r-- | fs/f2fs/gc.h | 44 |
1 files changed, 40 insertions, 4 deletions
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index db3c61046aa4..ee5d7f30a1f8 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -44,13 +44,49 @@ struct gc_inode_list { /* * inline functions */ + +/* + * On a Zoned device zone-capacity can be less than zone-size and if + * zone-capacity is not aligned to f2fs segment size(2MB), then the segment + * starting just before zone-capacity has some blocks spanning across the + * zone-capacity, these blocks are not usable. + * Such spanning segments can be in free list so calculate the sum of usable + * blocks in currently free segments including normal and spanning segments. + */ +static inline block_t free_segs_blk_count_zoned(struct f2fs_sb_info *sbi) +{ + block_t free_seg_blks = 0; + struct free_segmap_info *free_i = FREE_I(sbi); + int j; + + spin_lock(&free_i->segmap_lock); + for (j = 0; j < MAIN_SEGS(sbi); j++) + if (!test_bit(j, free_i->free_segmap)) + free_seg_blks += f2fs_usable_blks_in_seg(sbi, j); + spin_unlock(&free_i->segmap_lock); + + return free_seg_blks; +} + +static inline block_t free_segs_blk_count(struct f2fs_sb_info *sbi) +{ + if (f2fs_sb_has_blkzoned(sbi)) + return free_segs_blk_count_zoned(sbi); + + return free_segments(sbi) << sbi->log_blocks_per_seg; +} + static inline block_t free_user_blocks(struct f2fs_sb_info *sbi) { - if (free_segments(sbi) < overprovision_segments(sbi)) + block_t free_blks, ovp_blks; + + free_blks = free_segs_blk_count(sbi); + ovp_blks = overprovision_segments(sbi) << sbi->log_blocks_per_seg; + + if (free_blks < ovp_blks) return 0; - else - return (free_segments(sbi) - overprovision_segments(sbi)) - << sbi->log_blocks_per_seg; + + return free_blks - ovp_blks; } static inline block_t limit_invalid_user_blocks(struct f2fs_sb_info *sbi) |