From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/fs/btrfs/extent_io.c | 15 +++++++++++----
1 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/kernel/fs/btrfs/extent_io.c b/kernel/fs/btrfs/extent_io.c
index 5fc65a7..685a375 100644
--- a/kernel/fs/btrfs/extent_io.c
+++ b/kernel/fs/btrfs/extent_io.c
@@ -4034,11 +4034,12 @@
free_extent_buffer(eb);
/*
- * the filesystem may choose to bump up nr_to_write.
+ * The filesystem may choose to bump up nr_to_write.
* We have to make sure to honor the new nr_to_write
- * at any time
+ * at any time.
*/
- nr_to_write_done = wbc->nr_to_write <= 0;
+ nr_to_write_done = (wbc->sync_mode == WB_SYNC_NONE &&
+ wbc->nr_to_write <= 0);
}
pagevec_release(&pvec);
cond_resched();
@@ -5633,8 +5634,14 @@
char *dst = (char *)dstv;
unsigned long i = start >> PAGE_SHIFT;
- if (check_eb_range(eb, start, len))
+ if (check_eb_range(eb, start, len)) {
+ /*
+ * Invalid range hit, reset the memory, so callers won't get
+ * some random garbage for their uninitialzed memory.
+ */
+ memset(dstv, 0, len);
return;
+ }
offset = offset_in_page(start);
--
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