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Diffstat (limited to 'fs/ext4/balloc.c')
-rw-r--r--fs/ext4/balloc.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index a425e78c73e..ae26c37e398 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1804,15 +1804,17 @@ retry_alloc:
goto io_error;
free_blocks = le16_to_cpu(gdp->bg_free_blocks_count);
- /*
- * if there is not enough free blocks to make a new resevation
- * turn off reservation for this allocation
- */
- if (my_rsv && (free_blocks < windowsz)
- && (rsv_is_empty(&my_rsv->rsv_window)))
- my_rsv = NULL;
if (free_blocks > 0) {
+ /*
+ * try to allocate with group target block
+ * in the goal group. If we have low free_blocks
+ * count turn off reservation
+ */
+ if (my_rsv && (free_blocks < windowsz)
+ && (rsv_is_empty(&my_rsv->rsv_window)))
+ my_rsv = NULL;
+
bitmap_bh = ext4_read_block_bitmap(sb, group_no);
if (!bitmap_bh)
goto io_error;
@@ -1845,7 +1847,7 @@ retry_alloc:
* free blocks is less than half of the reservation
* window size.
*/
- if (free_blocks <= (windowsz/2))
+ if (my_rsv && (free_blocks <= (windowsz/2)))
continue;
brelse(bitmap_bh);