[rds-devel] [PATCH 9/9] RDS: use get_user_pages_fast()
Andy Grover
andy.grover at oracle.com
Mon Mar 30 11:44:53 PDT 2009
Use the new function that is simpler and faster.
Signed-off-by: Andy Grover <andy.grover at oracle.com>
---
net/rds/info.c | 5 +----
net/rds/rdma.c | 5 +----
2 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/net/rds/info.c b/net/rds/info.c
index 1d88553..62aeef3 100644
--- a/net/rds/info.c
+++ b/net/rds/info.c
@@ -188,10 +188,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
ret = -ENOMEM;
goto out;
}
- down_read(¤t->mm->mmap_sem);
- ret = get_user_pages(current, current->mm, start, nr_pages, 1, 0,
- pages, NULL);
- up_read(¤t->mm->mmap_sem);
+ ret = get_user_pages_fast(start, nr_pages, 1, pages);
if (ret != nr_pages) {
if (ret > 0)
nr_pages = ret;
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 584eac3..6ecea09 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -150,10 +150,7 @@ static int rds_pin_pages(unsigned long user_addr, unsigned int nr_pages,
{
int ret;
- down_read(¤t->mm->mmap_sem);
- ret = get_user_pages(current, current->mm, user_addr,
- nr_pages, write, 0, pages, NULL);
- up_read(¤t->mm->mmap_sem);
+ ret = get_user_pages_fast(user_addr, nr_pages, write, pages);
if (ret > 0 && (unsigned) ret < nr_pages) {
while (ret--)
--
1.5.6.3
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