Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
---
fs/btrfs/extent-tree.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 1d238ed..abe65ed 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4016,15 +4016,14 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
u64 delalloc_bytes;
u64 max_reclaim;
long time_left;
- unsigned long nr_pages = (2 * 1024 * 1024) >> PAGE_CACHE_SHIFT;
- int loops = 0;
+ unsigned long nr_pages;
+ int loops;
enum btrfs_reserve_flush_enum flush;
trans = (struct btrfs_trans_handle *)current->journal_info;
block_rsv = &root->fs_info->delalloc_block_rsv;
space_info = block_rsv->space_info;
- smp_mb();
delalloc_bytes = percpu_counter_sum_positive(
&root->fs_info->delalloc_bytes);
if (delalloc_bytes == 0) {
@@ -4034,6 +4033,7 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
return;
}
+ loops = 0;
while (delalloc_bytes && loops < 3) {
max_reclaim = min(delalloc_bytes, to_reclaim);
nr_pages = max_reclaim >> PAGE_CACHE_SHIFT;
@@ -4064,7 +4064,6 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
if (time_left)
break;
}
- smp_mb();
delalloc_bytes = percpu_counter_sum_positive(
&root->fs_info->delalloc_bytes);
}
--
1.8.1.4
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