On 2017/10/31 11:40, Jaegeuk Kim wrote:
> This patch adds quota_ino feature infra to be used for quota files.
>
> Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
Reviewed-by: Chao Yu <yuch...@huawei.com>
> ---
> fs/f2fs/f2fs.h | 6 ++++++
> fs/f2fs/sysfs.c | 7 +++++++
> include/linux/f2fs_fs.h | 6 +++++-
> 3 files changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 4a75f07f1dc8..9a1c7ffa6845 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -122,6 +122,7 @@ struct f2fs_mount_info {
> #define F2FS_FEATURE_PRJQUOTA 0x0010
> #define F2FS_FEATURE_INODE_CHKSUM 0x0020
> #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
> +#define F2FS_FEATURE_QUOTA_INO 0x0080
>
> #define F2FS_HAS_FEATURE(sb, mask) \
> ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
> @@ -3070,6 +3071,11 @@ static inline int
> f2fs_sb_has_flexible_inline_xattr(struct super_block *sb)
> return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
> }
>
> +static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
> +{
> + return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
> +}
> +
> #ifdef CONFIG_BLK_DEV_ZONED
> static inline int get_blkz_type(struct f2fs_sb_info *sbi,
> struct block_device *bdev, block_t blkaddr)
> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
> index f0fdc89ce82f..9835348b6e5d 100644
> --- a/fs/f2fs/sysfs.c
> +++ b/fs/f2fs/sysfs.c
> @@ -110,6 +110,9 @@ static ssize_t features_show(struct f2fs_attr *a,
> if (f2fs_sb_has_flexible_inline_xattr(sb))
> len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
> len ? ", " : "", "flexible_inline_xattr");
> + if (f2fs_sb_has_quota_ino(sb))
> + len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
> + len ? ", " : "", "quota_ino");
> len += snprintf(buf + len, PAGE_SIZE - len, "\n");
> return len;
> }
> @@ -227,6 +230,7 @@ enum feat_id {
> FEAT_PROJECT_QUOTA,
> FEAT_INODE_CHECKSUM,
> FEAT_FLEXIBLE_INLINE_XATTR,
> + FEAT_QUOTA_INO,
> };
>
> static ssize_t f2fs_feature_show(struct f2fs_attr *a,
> @@ -240,6 +244,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
> case FEAT_PROJECT_QUOTA:
> case FEAT_INODE_CHECKSUM:
> case FEAT_FLEXIBLE_INLINE_XATTR:
> + case FEAT_QUOTA_INO:
> return snprintf(buf, PAGE_SIZE, "supported\n");
> }
> return 0;
> @@ -314,6 +319,7 @@ F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
> F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
> F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
> F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
> +F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
>
> #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
> static struct attribute *f2fs_attrs[] = {
> @@ -364,6 +370,7 @@ static struct attribute *f2fs_feat_attrs[] = {
> ATTR_LIST(project_quota),
> ATTR_LIST(inode_checksum),
> ATTR_LIST(flexible_inline_xattr),
> + ATTR_LIST(quota_ino),
> NULL,
> };
>
> diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
> index 50a8ee501bf1..ce34007972c3 100644
> --- a/include/linux/f2fs_fs.h
> +++ b/include/linux/f2fs_fs.h
> @@ -36,6 +36,9 @@
> #define F2FS_NODE_INO(sbi) ((sbi)->node_ino_num)
> #define F2FS_META_INO(sbi) ((sbi)->meta_ino_num)
>
> +#define F2FS_QUOTA_INO 3
> +#define F2FS_MAX_QUOTAS 3
> +
> #define F2FS_IO_SIZE(sbi) (1 << (sbi)->write_io_size_bits) /* Blocks */
> #define F2FS_IO_SIZE_KB(sbi) (1 << ((sbi)->write_io_size_bits + 2)) /* KB */
> #define F2FS_IO_SIZE_BYTES(sbi) (1 << ((sbi)->write_io_size_bits + 12))
> /* B */
> @@ -108,7 +111,8 @@ struct f2fs_super_block {
> __u8 encryption_level; /* versioning level for encryption */
> __u8 encrypt_pw_salt[16]; /* Salt used for string2key algorithm */
> struct f2fs_device devs[MAX_DEVICES]; /* device list */
> - __u8 reserved[327]; /* valid reserved region */
> + __le32 qf_ino[F2FS_MAX_QUOTAS]; /* quota inode numbers */
> + __u8 reserved[315]; /* valid reserved region */
> } __packed;
>
> /*
>
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