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fs/fscache: remove spin_lock() from the condition in while()

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The spinlock() within the condition in while() will cause a compile error
if it is not a function. This is not a problem on mainline but it does not
look pretty and there is no reason to do it that way.
That patch writes it a little differently and avoids the double condition.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-By: Milosz Tanski <milosz@adfin.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
This commit is contained in:
Sebastian Andrzej Siewior 2013-05-10 19:50:24 +01:00 committed by David Howells
parent cb65537ee1
commit ee8be57bc3
1 changed files with 10 additions and 6 deletions
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16
fs/fscache/page.c
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@ -796,11 +796,16 @@ void fscache_invalidate_writes(struct fscache_cookie *cookie)
_enter("");
while (spin_lock(&cookie->stores_lock),
n = radix_tree_gang_lookup_tag(&cookie->stores, results, 0,
ARRAY_SIZE(results),
FSCACHE_COOKIE_PENDING_TAG),
n > 0) {
for (;;) {
spin_lock(&cookie->stores_lock);
n = radix_tree_gang_lookup_tag(&cookie->stores, results, 0,
ARRAY_SIZE(results),
FSCACHE_COOKIE_PENDING_TAG);
if (n == 0) {
spin_unlock(&cookie->stores_lock);
break;
}
for (i = n - 1; i >= 0; i--) {
page = results[i];
radix_tree_delete(&cookie->stores, page->index);
@ -812,7 +817,6 @@ void fscache_invalidate_writes(struct fscache_cookie *cookie)
page_cache_release(results[i]);
}
spin_unlock(&cookie->stores_lock);
_leave("");
}