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binfmt_misc: replace __get_free_page() with kmalloc()

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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@kernel.org>
Link: https://patch.msgid.link/20260523-b4-fs-v1-16-275e36a83f0e@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Mike Rapoport (Microsoft) 2026-05-23 20:54:28 +03:00 committed by Christian Brauner
parent 1b27d11b17
commit 6ff17653e9
1 changed files with 2 additions and 2 deletions
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4
fs/binfmt_misc.c
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@ -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;
}