linux-ext4 - [PATCH] ext2: adjust block num when retry allocation

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Date:   Mon, 21 Oct 2019 07:23:26 +0800
From:   Chengguang Xu <cgxu519@...ernel.net>
To:     jack@...e.com
Cc:     linux-ext4@...r.kernel.org, Chengguang Xu <cgxu519@...ernel.net>
Subject: [PATCH] ext2: adjust block num when retry allocation

Set block num to original *count in a case
of retrying allocation in case num < *count

Signed-off-by: Chengguang Xu <cgxu519@...ernel.net>
---
Hi Jan,

This patch is only compile-tested, I'm not sure if this
kind of unexpected condition which causes reallocation
will actually happen but baesd on the code the fix seems
correct and better.

 fs/ext2/balloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index e0cc55164505..924c1c765306 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -1404,6 +1404,7 @@ ext2_fsblk_t ext2_new_blocks(struct inode *inode, ext2_fsblk_t goal,
 		 * use.  So we may want to selectively mark some of the blocks
 		 * as free
 		 */
+		num = *count;
 		goto retry_alloc;
 	}
 
-- 
2.21.0