From: Li Nan <linan122@xxxxxxxxxx>
In badblocks_set(), even if no badblocks changes, bb->changed and
unacked_exist will still be set. Only set them when badblocks changes.
Fixes: 9e0e252a048b ("badblocks: Add core badblock management code")
Signed-off-by: Li Nan <linan122@xxxxxxxxxx>
---
block/badblocks.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/block/badblocks.c b/block/badblocks.c
index f28e971a4b94..7b1ad364e85c 100644
--- a/block/badblocks.c
+++ b/block/badblocks.c
@@ -166,6 +166,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
int lo, hi;
int rv = 0;
unsigned long flags;
+ bool changed = false;
if (bb->shift < 0)
/* badblocks are disabled */
@@ -229,6 +230,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
s = a + BB_MAX_LEN;
}
sectors = e - s;
+ changed = true;
}
}
if (sectors && hi < bb->count) {
@@ -259,6 +261,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
sectors = e - s;
lo = hi;
hi++;
+ changed = true;
}
}
if (sectors == 0 && hi < bb->count) {
@@ -277,6 +280,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
memmove(p + hi, p + hi + 1,
(bb->count - hi - 1) * 8);
bb->count--;
+ changed = true;
}
}
while (sectors) {
@@ -299,14 +303,17 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
p[hi] = BB_MAKE(s, this_sectors, acknowledged);
sectors -= this_sectors;
s += this_sectors;
+ changed = true;
}
}
- bb->changed = true;
- if (!acknowledged)
- bb->unacked_exist = true;
- else
- badblocks_update_acked(bb);
+ if (changed) {
+ bb->changed = changed;
+ if (!acknowledged)
+ bb->unacked_exist = true;
+ else
+ badblocks_update_acked(bb);
+ }
write_sequnlock_irqrestore(&bb->lock, flags);
return rv;
--
2.39.2
