commit 1bf94ca73ea524228b864275efa44373ebb939a0
author Miklos Szeredi <mszeredi@suse.cz> Tue May 25 15:06:06 2010 +0200
committer Miklos Szeredi <mszeredi@suse.cz> Tue May 25 15:06:06 2010 +0200
tree 6ad0f17f4da1f1dd8a1aae2c77e5865fb5f42f33
parent 4aa0edd294f69e3100973a0ecfa1e6b5ab42d83a

fuse: use get_user_pages_fast()

Replace uses of get_user_pages() with get_user_pages_fast().  It looks
nicer and should be faster in most cases.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

fs/fuse/file.c

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 4172bfe..29bda05 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -994,10 +994,7 @@
 	nbytes = min_t(size_t, nbytes, FUSE_MAX_PAGES_PER_REQ << PAGE_SHIFT);
 	npages = (nbytes + offset + PAGE_SIZE - 1) >> PAGE_SHIFT;
 	npages = clamp(npages, 1, FUSE_MAX_PAGES_PER_REQ);
-	down_read(&current->mm->mmap_sem);
-	npages = get_user_pages(current, current->mm, user_addr, npages, !write,
-				0, req->pages, NULL);
-	up_read(&current->mm->mmap_sem);
+	npages = get_user_pages_fast(user_addr, npages, !write, req->pages);
 	if (npages < 0)
 		return npages;