diff options
Diffstat (limited to 'extent_io.c')
| -rw-r--r-- | extent_io.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/extent_io.c b/extent_io.c index 9990338b..ebb35b28 100644 --- a/extent_io.c +++ b/extent_io.c @@ -28,7 +28,8 @@ #include "extent_io.h" #include "list.h" -u64 cache_max = 1024 * 1024 * 32; +u64 cache_soft_max = 1024 * 1024 * 256; +u64 cache_hard_max = 1 * 1024 * 1024 * 1024; void extent_io_tree_init(struct extent_io_tree *tree) { @@ -540,18 +541,19 @@ static int free_some_buffers(struct extent_io_tree *tree) struct extent_buffer *eb; struct list_head *node, *next; - if (tree->cache_size < cache_max) + if (tree->cache_size < cache_soft_max) return 0; + list_for_each_safe(node, next, &tree->lru) { eb = list_entry(node, struct extent_buffer, lru); if (eb->refs == 1) { free_extent_buffer(eb); - if (tree->cache_size < cache_max) + if (tree->cache_size < cache_hard_max) break; } else { list_move_tail(&eb->lru, &tree->lru); } - if (nrscan++ > 64) + if (nrscan++ > 64 && tree->cache_size < cache_hard_max) break; } return 0; |