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Message-Id: <20231221012040.17763-4-warthog618@gmail.com> Date: Thu, 21 Dec 2023 09:20:38 +0800 From: Kent Gibson <warthog618@...il.com> To: linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org, brgl@...ev.pl, linus.walleij@...aro.org, andy@...nel.org Cc: Kent Gibson <warthog618@...il.com> Subject: [PATCH v2 3/5] gpiolib: cdev: allocate linereq using kvzalloc() The size of struct linereq may exceed a page, so allocate space for it using kvzalloc() instead of kzalloc() to handle the case where memory is heavily fragmented and kzalloc() cannot find a sufficient contiguous region. Signed-off-by: Kent Gibson <warthog618@...il.com> --- drivers/gpio/gpiolib-cdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c index 942fe115b726..5424c878627e 100644 --- a/drivers/gpio/gpiolib-cdev.c +++ b/drivers/gpio/gpiolib-cdev.c @@ -1723,7 +1723,7 @@ static void linereq_free(struct linereq *lr) kfifo_free(&lr->events); kfree(lr->label); gpio_device_put(lr->gdev); - kfree(lr); + kvfree(lr); } static int linereq_release(struct inode *inode, struct file *file) @@ -1788,7 +1788,7 @@ static int linereq_create(struct gpio_device *gdev, void __user *ip) if (ret) return ret; - lr = kzalloc(struct_size(lr, lines, ulr.num_lines), GFP_KERNEL); + lr = kvzalloc(struct_size(lr, lines, ulr.num_lines), GFP_KERNEL); if (!lr) return -ENOMEM; lr->num_lines = ulr.num_lines; -- 2.39.2
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