From 0b088e003ccf316a76c51be5dec2d70b93be3be8 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Mon, 24 May 2010 20:12:41 -0700 Subject: RDS: Use page_remainder_alloc() for recv bufs Instead of splitting up a page into RDS_FRAG_SIZE chunks ourselves, ask rds_page_remainder_alloc() to do it. While it is possible PAGE_SIZE > FRAG_SIZE, on x86en it isn't, so having duplicate "carve up a page into buffers" code seems excessive. The other modification this spawns is the use of a single struct scatterlist in rds_page_frag instead of a bare page ptr. This causes verbosity to increase in some places, and decrease in others. Finally, I decided to unify the lifetimes and alloc/free of rds_page_frag and its page. This is a nice simplification in itself, but will be extra-nice once we come to adding cmason's recycling patch. Signed-off-by: Andy Grover --- net/rds/page.c | 1 + 1 file changed, 1 insertion(+) (limited to 'net/rds/page.c') diff --git a/net/rds/page.c b/net/rds/page.c index e5b2527ae257..5e44f5ae7898 100644 --- a/net/rds/page.c +++ b/net/rds/page.c @@ -186,6 +186,7 @@ out: ret ? 0 : scat->length); return ret; } +EXPORT_SYMBOL_GPL(rds_page_remainder_alloc); static int rds_page_remainder_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) -- cgit