[PATCH 16/17] binfmt_misc: replace __get_free_page() with kmalloc()

[Mike Rapoport (Microsoft)]

bm_entry_read() allocates temporary buffer using __get_free_page().

kmalloc() is a better API for such use and it also provides better
scalability and more debugging possibilities.

Replace use of __get_free_page() with kmalloc().

Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
---
 fs/binfmt_misc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index b3d8fd70e8b1..84349fcb93f1 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -704,7 +704,7 @@ bm_entry_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
 	ssize_t res;
 	char *page;
 
-	page = (char *) __get_free_page(GFP_KERNEL);
+	page = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!page)
 		return -ENOMEM;
 
@@ -712,7 +712,7 @@ bm_entry_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
 
 	res = simple_read_from_buffer(buf, nbytes, ppos, page, strlen(page));
 
-	free_page((unsigned long) page);
+	kfree(page);
 	return res;
 }
 

-- 
2.53.0