Messages in this thread Patch in this message |  | | From | Palmer Dabbelt <> | Subject | [PATCH 11/13] Always define MAX_RAW_MINORS as 2**20 in userspace | Date | Tue, 3 Nov 2015 11:46:32 -0800 |
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While I don't think this was ever meant to be exposed to userspace, if anyone is using it then this will at least provide a correct (if unlikely) definition.
MAX_RAW_MINORS used to be used in the kernel, where it's been replaced with CONFIG_MAX_RAW_MINORS.
Note that there's a checkpatch.pl warning about a split config string here, but I've left that alone.
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com> Reviewed-by: Andrew Waterman <waterman@eecs.berkeley.edu> Reviewed-by: Albert Ou <aou@eecs.berkeley.edu> --- drivers/char/raw.c | 7 ++++--- include/uapi/linux/raw.h | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 60316fb..362d7a6 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -36,7 +36,7 @@ static struct raw_device_data *raw_devices; static DEFINE_MUTEX(raw_mutex); static const struct file_operations raw_ctl_fops; /* forward declaration */ -static int max_raw_minors = MAX_RAW_MINORS; +static int max_raw_minors = CONFIG_MAX_RAW_MINORS; module_param(max_raw_minors, int, 0); MODULE_PARM_DESC(max_raw_minors, "Maximum number of raw devices (1-65536)"); @@ -317,8 +317,9 @@ static int __init raw_init(void) if (max_raw_minors < 1 || max_raw_minors > 65536) { printk(KERN_WARNING "raw: invalid max_raw_minors (must be" - " between 1 and 65536), using %d\n", MAX_RAW_MINORS); - max_raw_minors = MAX_RAW_MINORS; + " between 1 and 65536), using %d\n", + CONFIG_MAX_RAW_MINORS); + max_raw_minors = CONFIG_MAX_RAW_MINORS; } raw_devices = vzalloc(sizeof(struct raw_device_data) * max_raw_minors); diff --git a/include/uapi/linux/raw.h b/include/uapi/linux/raw.h index 62d543e..f3d009b 100644 --- a/include/uapi/linux/raw.h +++ b/include/uapi/linux/raw.h @@ -13,6 +13,6 @@ struct raw_config_request __u64 block_minor; }; -#define MAX_RAW_MINORS CONFIG_MAX_RAW_DEVS +#define MAX_RAW_MINORS (1 << 20) #endif /* __LINUX_RAW_H */ -- 2.4.10
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