1 files changed, 7 insertions, 1 deletions

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 1707850301d6..57909882c084 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1738,10 +1738,16 @@ ext4_fsblk_t ext4_old_new_blocks(handle_t *handle, struct inode *inode,
                 /*
                  * With delalloc we already reserved the blocks
                  */
-                if (ext4_claim_free_blocks(sbi, *count)) {
+                while (*count && ext4_claim_free_blocks(sbi, *count)) {
+                        /* let others to free the space */
+                        yield();
+                        *count = *count >> 1;
+                }
+                if (!*count) {
                         *errp = -ENOSPC;
                         return 0;       /*return with ENOSPC error */
                 }
+                num = *count;
         }
         /*
          * Check quota for allocation of this block.