Hello.
I've found a small bug in create_buffers(). When buffer is created it is not attached
to any list. The patch simply does refile_buffer() on every created buffer so it is placed
on proper LRU list.
Honza.
--OXfL5xGRrasGEqWY
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Content-Disposition: attachment; filename="buffer.c.diff"
--- linux/fs/buffer.c Tue Nov 23 22:58:40 1999
+++ linux/fs/buffer.c Fri Nov 26 23:04:40 1999
@@ -1207,6 +1207,7 @@
bh->b_list = BUF_CLEAN;
bh->b_end_io = end_buffer_io_bad;
+ refile_buffer(bh);
}
return head;
/*
@@ -1214,12 +1215,15 @@
*/
no_grow:
if (head) {
+ spin_lock(&lru_list_lock);
spin_lock(&unused_list_lock);
do {
bh = head;
head = head->b_this_page;
+ __remove_from_lru_list(bh, bh->b_list);
__put_unused_buffer_head(bh);
} while (head);
+ spin_unlock(&lru_list_lock);
spin_unlock(&unused_list_lock);
/* Wake up any waiters ... */
--OXfL5xGRrasGEqWY--
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