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-rw-r--r--fs/ext4/mballoc.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 2c10b50..e4f30de 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;
}