diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/mballoc.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 64d3760e4bcf..704f8e5608f7 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2307,7 +2307,7 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac, struct super_block *sb = ac->ac_sb; void *bitmap = e4b->bd_bitmap; struct ext4_free_extent ex; - int i; + int i, j, freelen; int free; free = e4b->bd_info->bb_free; @@ -2334,6 +2334,23 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac, break; } + if (ac->ac_criteria < CR2) { + /* + * In CR1, we are sure that this group will + * have a large enough continuous free extent, so skip + * over the smaller free extents + */ + j = mb_find_next_bit(bitmap, + EXT4_CLUSTERS_PER_GROUP(sb), i); + freelen = j - i; + + if (freelen < ac->ac_g_ex.fe_len) { + i = j; + free -= freelen; + continue; + } + } + mb_find_extent(e4b, i, ac->ac_g_ex.fe_len, &ex); if (WARN_ON(ex.fe_len <= 0)) break; |