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fuse: replace __get_free_page() with kmalloc()

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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@kernel.org>
Link: https://patch.msgid.link/20260523-b4-fs-v1-12-275e36a83f0e@kernel.org
Acked-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Mike Rapoport (Microsoft) 2026-05-23 20:54:24 +03:00 committed by Christian Brauner
parent 263873f40e
commit 3db329857c
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 3 additions and 2 deletions
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5
fs/fuse/ioctl.c
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@ -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);