1 files changed, 6 insertions, 1 deletions

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 2c10b5058a8..e4f30de11a9 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4395,7 +4395,12 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
                 /*
                  * With delalloc we already reserved the blocks
                  */
-                if (ext4_claim_free_blocks(sbi, ar->len)) {
+                while (ar->len && ext4_claim_free_blocks(sbi, ar->len)) {
+                        /* let others to free the space */
+                        yield();
+                        ar->len = ar->len >> 1;
+                }
+                if (!ar->len) {
                         *errp = -ENOSPC;
                         return 0;
                 }