Hello
When file size is 1, both the 'start' and 'end' of a extent_state are
set to 0 by set_extent_uptodate.
Regards
YZ
diff -r d0921c0349a9 extent_map.c
--- a/extent_map.c Fri Sep 14 10:23:29 2007 -0400
+++ b/extent_map.c Tue Sep 18 11:56:17 2007 +0800
@@ -353,7 +353,7 @@ static int insert_state(struct extent_ma
state->state |= bits;
state->start = start;
state->end = end;
- if ((end & 4095) == 0) {
+ if (end != start && (end & 4095) == 0) {
printk("insert state %Lu %Lu strange end\n", start, end);
WARN_ON(1);
}
@@ -391,7 +391,7 @@ static int split_state(struct extent_map
prealloc->end = split - 1;
prealloc->state = orig->state;
orig->start = split;
- if ((prealloc->end & 4095) == 0) {
+ if (prealloc->end != prealloc->start && (prealloc->end & 4095) == 0) {
printk("insert state %Lu %Lu strange end\n", prealloc->start,
prealloc->end);
WARN_ON(1);
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