[PATCH 12/17] fuse: replace __get_free_page() with kmalloc()

[Mike Rapoport (Microsoft)]

fuse_do_ioctl allocates memory for struct iov array 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/fuse/ioctl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/fuse/ioctl.c b/fs/fuse/ioctl.c
index fdc175e93f74..3614ea603913 100644
--- a/fs/fuse/ioctl.c
+++ b/fs/fuse/ioctl.c
@@ -10,6 +10,7 @@
 #include <linux/fileattr.h>
 #include <linux/fsverity.h>
 
+#include <linux/slab.h>
 #define FUSE_VERITY_ENABLE_ARG_MAX_PAGES 256
 
 static ssize_t fuse_send_ioctl(struct fuse_mount *fm, struct fuse_args *args,
@@ -252,7 +253,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
 
 	err = -ENOMEM;
 	ap.folios = fuse_folios_alloc(fm->fc->max_pages, GFP_KERNEL, &ap.descs);
-	iov_page = (struct iovec *) __get_free_page(GFP_KERNEL);
+	iov_page = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!ap.folios || !iov_page)
 		goto out;
 
@@ -400,7 +401,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
 	}
 	err = 0;
  out:
-	free_page((unsigned long) iov_page);
+	kfree(iov_page);
 	while (ap.num_folios)
 		folio_put(ap.folios[--ap.num_folios]);
 	kfree(ap.folios);

-- 
2.53.0