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Revert "drivers/fbd/action.c: removed some 64-bit functions"

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This reverts commit 85e7d849c8.

This introduce a bug in position computing for disk bigger than 4GB.

Change-Id: I281e60e9644d995cc4643006b50c05693f939b44
This commit is contained in:
Lionel Sambuc 2013-07-23 17:49:11 +02:00 committed by Gerrit Code Review
parent 63d39b995c
commit 003ff52ebb
1 changed files with 8 additions and 8 deletions
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14
drivers/fbd/action.c
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@ -49,14 +49,14 @@ static size_t get_range(struct fbd_rule *rule, u64_t pos, size_t *size,
to_eof = cmp64(rule->start, rule->end) >= 0;
if (cmp64(pos, rule->start) > 0) {
if (skip != NULL) *skip = pos - rule->start;
if (skip != NULL) *skip = sub64(pos, rule->start);
off = 0;
}
else {
if (skip != NULL) *skip = ((u64_t)(0));
delta = rule->start - pos;
delta = sub64(rule->start, pos);
assert(ex64hi(delta) == 0);
@ -66,7 +66,7 @@ static size_t get_range(struct fbd_rule *rule, u64_t pos, size_t *size,
if (!to_eof) {
assert(cmp64(pos, rule->end) < 0);
delta = rule->end - pos;
delta = sub64(rule->end, pos);
if (cmp64u(delta, *size) < 0)
*size = ex64lo(delta);
@ -186,16 +186,16 @@ static void action_pre_misdir(struct fbd_rule *rule, iovec_t *UNUSED(iov),
* here, because we have no idea about the actual disk size, and the
* resulting address must of course be valid..
*/
range = ((rule->params.misdir.end - rule->params.misdir.start) + 1)
/ rule->params.misdir.align;
range = div64u(add64u(sub64(rule->params.misdir.end,
rule->params.misdir.start), 1), rule->params.misdir.align);
if (range > 0)
choice = get_rand(range - 1);
else
choice = 0;
*pos = rule->params.misdir.start +
(u64_t)(choice * rule->params.misdir.align);
*pos = add64(rule->params.misdir.start,
mul64u(choice, rule->params.misdir.align));
}
/*===========================================================================*