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Date: Mon, 28 Sep 2015 13:53:20 +0200
From: Andrzej Pietrasiewicz <andrzej.p@...sung.com>
To: Christoph Hellwig <hch@....de>, Joel Becker <jlbec@...lplan.org>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Felipe Balbi <balbi@...com>, Tejun Heo <tj@...nel.org>,
Pratyush Anand <pratyush.anand@...il.com>,
target-devel@...r.kernel.org, cluster-devel@...hat.com,
ocfs2-devel@....oracle.com, linux-usb@...r.kernel.org,
netdev@...r.kernel.org
Subject: Re: [PATCH 11/23] usb-gadget/f_mass_storage: use per-attribute show
and store methods
Hi Christoph,
The same remark as for f_loopback (__CONFIGFS_ATTR location vs
CONFIGFS_ATTR location after applying)
If addressed
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@...sung.com>
W dniu 25.09.2015 o 15:49, Christoph Hellwig pisze:
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
> drivers/usb/gadget/function/f_mass_storage.c | 123 ++++++++++-----------------
> 1 file changed, 46 insertions(+), 77 deletions(-)
>
> diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
> index a6eb537..db71ae9 100644
> --- a/drivers/usb/gadget/function/f_mass_storage.c
> +++ b/drivers/usb/gadget/function/f_mass_storage.c
> @@ -3144,9 +3144,6 @@ static inline struct fsg_opts *to_fsg_opts(struct config_item *item)
> func_inst.group);
> }
>
> -CONFIGFS_ATTR_STRUCT(fsg_lun_opts);
> -CONFIGFS_ATTR_OPS(fsg_lun_opts);
> -
> static void fsg_lun_attr_release(struct config_item *item)
> {
> struct fsg_lun_opts *lun_opts;
> @@ -3157,110 +3154,89 @@ static void fsg_lun_attr_release(struct config_item *item)
>
> static struct configfs_item_operations fsg_lun_item_ops = {
> .release = fsg_lun_attr_release,
> - .show_attribute = fsg_lun_opts_attr_show,
> - .store_attribute = fsg_lun_opts_attr_store,
> };
>
> -static ssize_t fsg_lun_opts_file_show(struct fsg_lun_opts *opts, char *page)
> +static ssize_t fsg_lun_opts_file_show(struct config_item *item, char *page)
> {
> - struct fsg_opts *fsg_opts;
> -
> - fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
> + struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
> + struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
>
> return fsg_show_file(opts->lun, &fsg_opts->common->filesem, page);
> }
>
> -static ssize_t fsg_lun_opts_file_store(struct fsg_lun_opts *opts,
> +static ssize_t fsg_lun_opts_file_store(struct config_item *item,
> const char *page, size_t len)
> {
> - struct fsg_opts *fsg_opts;
> -
> - fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
> + struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
> + struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
>
> return fsg_store_file(opts->lun, &fsg_opts->common->filesem, page, len);
> }
>
> -static struct fsg_lun_opts_attribute fsg_lun_opts_file =
> - __CONFIGFS_ATTR(file, S_IRUGO | S_IWUSR, fsg_lun_opts_file_show,
> - fsg_lun_opts_file_store);
> -
> -static ssize_t fsg_lun_opts_ro_show(struct fsg_lun_opts *opts, char *page)
> +static ssize_t fsg_lun_opts_ro_show(struct config_item *item, char *page)
> {
> - return fsg_show_ro(opts->lun, page);
> + return fsg_show_ro(to_fsg_lun_opts(item)->lun, page);
> }
>
> -static ssize_t fsg_lun_opts_ro_store(struct fsg_lun_opts *opts,
> +static ssize_t fsg_lun_opts_ro_store(struct config_item *item,
> const char *page, size_t len)
> {
> - struct fsg_opts *fsg_opts;
> -
> - fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
> + struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
> + struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
>
> return fsg_store_ro(opts->lun, &fsg_opts->common->filesem, page, len);
> }
>
> -static struct fsg_lun_opts_attribute fsg_lun_opts_ro =
> - __CONFIGFS_ATTR(ro, S_IRUGO | S_IWUSR, fsg_lun_opts_ro_show,
> - fsg_lun_opts_ro_store);
> -
> -static ssize_t fsg_lun_opts_removable_show(struct fsg_lun_opts *opts,
> +static ssize_t fsg_lun_opts_removable_show(struct config_item *item,
> char *page)
> {
> - return fsg_show_removable(opts->lun, page);
> + return fsg_show_removable(to_fsg_lun_opts(item)->lun, page);
> }
>
> -static ssize_t fsg_lun_opts_removable_store(struct fsg_lun_opts *opts,
> +static ssize_t fsg_lun_opts_removable_store(struct config_item *item,
> const char *page, size_t len)
> {
> - return fsg_store_removable(opts->lun, page, len);
> + return fsg_store_removable(to_fsg_lun_opts(item)->lun, page, len);
> }
>
> -static struct fsg_lun_opts_attribute fsg_lun_opts_removable =
> - __CONFIGFS_ATTR(removable, S_IRUGO | S_IWUSR,
> - fsg_lun_opts_removable_show,
> - fsg_lun_opts_removable_store);
> -
> -static ssize_t fsg_lun_opts_cdrom_show(struct fsg_lun_opts *opts, char *page)
> +static ssize_t fsg_lun_opts_cdrom_show(struct config_item *item, char *page)
> {
> - return fsg_show_cdrom(opts->lun, page);
> + return fsg_show_cdrom(to_fsg_lun_opts(item)->lun, page);
> }
>
> -static ssize_t fsg_lun_opts_cdrom_store(struct fsg_lun_opts *opts,
> +static ssize_t fsg_lun_opts_cdrom_store(struct config_item *item,
> const char *page, size_t len)
> {
> - struct fsg_opts *fsg_opts;
> -
> - fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
> + struct fsg_lun_opts *opts = to_fsg_lun_opts(item);
> + struct fsg_opts *fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
>
> return fsg_store_cdrom(opts->lun, &fsg_opts->common->filesem, page,
> len);
> }
>
> -static struct fsg_lun_opts_attribute fsg_lun_opts_cdrom =
> - __CONFIGFS_ATTR(cdrom, S_IRUGO | S_IWUSR, fsg_lun_opts_cdrom_show,
> - fsg_lun_opts_cdrom_store);
> -
> -static ssize_t fsg_lun_opts_nofua_show(struct fsg_lun_opts *opts, char *page)
> +static ssize_t fsg_lun_opts_nofua_show(struct config_item *item, char *page)
> {
> - return fsg_show_nofua(opts->lun, page);
> + return fsg_show_nofua(to_fsg_lun_opts(item)->lun, page);
> }
>
> -static ssize_t fsg_lun_opts_nofua_store(struct fsg_lun_opts *opts,
> +static ssize_t fsg_lun_opts_nofua_store(struct config_item *item,
> const char *page, size_t len)
> {
> - return fsg_store_nofua(opts->lun, page, len);
> + return fsg_store_nofua(to_fsg_lun_opts(item)->lun, page, len);
> }
>
> -static struct fsg_lun_opts_attribute fsg_lun_opts_nofua =
> - __CONFIGFS_ATTR(nofua, S_IRUGO | S_IWUSR, fsg_lun_opts_nofua_show,
> - fsg_lun_opts_nofua_store);
> +CONFIGFS_ATTR(fsg_lun_opts_, file);
> +CONFIGFS_ATTR(fsg_lun_opts_, ro);
> +CONFIGFS_ATTR(fsg_lun_opts_, removable);
> +CONFIGFS_ATTR(fsg_lun_opts_, cdrom);
> +CONFIGFS_ATTR(fsg_lun_opts_, nofua);
>
> static struct configfs_attribute *fsg_lun_attrs[] = {
> - &fsg_lun_opts_file.attr,
> - &fsg_lun_opts_ro.attr,
> - &fsg_lun_opts_removable.attr,
> - &fsg_lun_opts_cdrom.attr,
> - &fsg_lun_opts_nofua.attr,
> + &fsg_lun_opts_attr_file,
> + &fsg_lun_opts_attr_ro,
> + &fsg_lun_opts_attr_removable,
> + &fsg_lun_opts_attr_cdrom,
> + &fsg_lun_opts_attr_nofua,
> NULL,
> };
>
> @@ -3352,9 +3328,6 @@ static void fsg_lun_drop(struct config_group *group, struct config_item *item)
> config_item_put(item);
> }
>
> -CONFIGFS_ATTR_STRUCT(fsg_opts);
> -CONFIGFS_ATTR_OPS(fsg_opts);
> -
> static void fsg_attr_release(struct config_item *item)
> {
> struct fsg_opts *opts = to_fsg_opts(item);
> @@ -3364,12 +3337,11 @@ static void fsg_attr_release(struct config_item *item)
>
> static struct configfs_item_operations fsg_item_ops = {
> .release = fsg_attr_release,
> - .show_attribute = fsg_opts_attr_show,
> - .store_attribute = fsg_opts_attr_store,
> };
>
> -static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page)
> +static ssize_t fsg_opts_stall_show(struct config_item *item, char *page)
> {
> + struct fsg_opts *opts = to_fsg_opts(item);
> int result;
>
> mutex_lock(&opts->lock);
> @@ -3379,9 +3351,10 @@ static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page)
> return result;
> }
>
> -static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page,
> +static ssize_t fsg_opts_stall_store(struct config_item *item, const char *page,
> size_t len)
> {
> + struct fsg_opts *opts = to_fsg_opts(item);
> int ret;
> bool stall;
>
> @@ -3403,13 +3376,12 @@ static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page,
> return ret;
> }
>
> -static struct fsg_opts_attribute fsg_opts_stall =
> - __CONFIGFS_ATTR(stall, S_IRUGO | S_IWUSR, fsg_opts_stall_show,
> - fsg_opts_stall_store);
> +CONFIGFS_ATTR(fsg_opts_, stall);
>
> #ifdef CONFIG_USB_GADGET_DEBUG_FILES
> -static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page)
> +static ssize_t fsg_opts_num_buffers_show(struct config_item *item, char *page)
> {
> + struct fsg_opts *opts = to_fsg_opts(item);
> int result;
>
> mutex_lock(&opts->lock);
> @@ -3419,9 +3391,10 @@ static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page)
> return result;
> }
>
> -static ssize_t fsg_opts_num_buffers_store(struct fsg_opts *opts,
> +static ssize_t fsg_opts_num_buffers_store(struct config_item *item,
> const char *page, size_t len)
> {
> + struct fsg_opts *opts = to_fsg_opts(item);
> int ret;
> u8 num;
>
> @@ -3446,17 +3419,13 @@ end:
> return ret;
> }
>
> -static struct fsg_opts_attribute fsg_opts_num_buffers =
> - __CONFIGFS_ATTR(num_buffers, S_IRUGO | S_IWUSR,
> - fsg_opts_num_buffers_show,
> - fsg_opts_num_buffers_store);
> -
> +CONFIGFS_ATTR(fsg_opts_, num_buffers);
> #endif
>
> static struct configfs_attribute *fsg_attrs[] = {
> - &fsg_opts_stall.attr,
> + &fsg_opts_attr_stall,
> #ifdef CONFIG_USB_GADGET_DEBUG_FILES
> - &fsg_opts_num_buffers.attr,
> + &fsg_opts_attr_num_buffers,
> #endif
> NULL,
> };
>
--
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