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f2fs: support inode creation time

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This patch adds creation time field in inode layout to support showing
kstat.btime in ->statx.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2018-01-25 14:54:42 +08:00 committed by Jaegeuk Kim
parent 068c3cd858
commit 1c1d35df71
6 changed files with 43 additions and 2 deletions
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7
fs/f2fs/f2fs.h
View File

@ -124,6 +124,7 @@ struct f2fs_mount_info {
#define F2FS_FEATURE_INODE_CHKSUM 0x0020
#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
#define F2FS_FEATURE_QUOTA_INO 0x0080
#define F2FS_FEATURE_INODE_CRTIME 0x0100
#define F2FS_HAS_FEATURE(sb, mask) \
((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
@ -635,6 +636,7 @@ struct f2fs_inode_info {
int i_extra_isize; /* size of extra space located in i_addr */
kprojid_t i_projid; /* id for project quota */
int i_inline_xattr_size; /* inline xattr size */
struct timespec i_crtime; /* inode creation time */
};
static inline void get_extent_info(struct extent_info *ext,
@ -3205,6 +3207,11 @@ static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
}
static inline int f2fs_sb_has_inode_crtime(struct super_block *sb)
{
return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CRTIME);
}
#ifdef CONFIG_BLK_DEV_ZONED
static inline int get_blkz_type(struct f2fs_sb_info *sbi,
struct block_device *bdev, block_t blkaddr)

9
fs/f2fs/file.c
View File

@ -672,8 +672,17 @@ int f2fs_getattr(const struct path *path, struct kstat *stat,
{
struct inode *inode = d_inode(path->dentry);
struct f2fs_inode_info *fi = F2FS_I(inode);
struct f2fs_inode *ri;
unsigned int flags;
if (f2fs_has_extra_attr(inode) &&
f2fs_sb_has_inode_crtime(inode->i_sb) &&
F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
stat->result_mask |= STATX_BTIME;
stat->btime.tv_sec = fi->i_crtime.tv_sec;
stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
}
flags = fi->i_flags & (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL);
if (flags & FS_APPEND_FL)
stat->attributes |= STATX_ATTR_APPEND;

15
fs/f2fs/inode.c
View File

@ -278,6 +278,12 @@ static int do_read_inode(struct inode *inode)
i_projid = F2FS_DEF_PROJID;
fi->i_projid = make_kprojid(&init_user_ns, i_projid);
if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
}
f2fs_put_page(node_page, 1);
stat_inc_inline_xattr(inode);
@ -421,6 +427,15 @@ void update_inode(struct inode *inode, struct page *node_page)
F2FS_I(inode)->i_projid);
ri->i_projid = cpu_to_le32(i_projid);
}
if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) &&
F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
i_crtime)) {
ri->i_crtime =
cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
ri->i_crtime_nsec =
cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
}
}
__set_inode_rdev(inode, ri);

3
fs/f2fs/namei.c
View File

@ -50,7 +50,8 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
inode->i_ino = ino;
inode->i_blocks = 0;
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
inode->i_mtime = inode->i_atime = inode->i_ctime =
F2FS_I(inode)->i_crtime = current_time(inode);
inode->i_generation = sbi->s_next_generation++;
err = insert_inode_locked(inode);

7
fs/f2fs/sysfs.c
View File

@ -113,6 +113,9 @@ static ssize_t features_show(struct f2fs_attr *a,
if (f2fs_sb_has_quota_ino(sb))
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "quota_ino");
if (f2fs_sb_has_inode_crtime(sb))
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "inode_crtime");
len += snprintf(buf + len, PAGE_SIZE - len, "\n");
return len;
}
@ -232,6 +235,7 @@ enum feat_id {
FEAT_INODE_CHECKSUM,
FEAT_FLEXIBLE_INLINE_XATTR,
FEAT_QUOTA_INO,
FEAT_INODE_CRTIME,
};
static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@ -246,6 +250,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
case FEAT_INODE_CHECKSUM:
case FEAT_FLEXIBLE_INLINE_XATTR:
case FEAT_QUOTA_INO:
case FEAT_INODE_CRTIME:
return snprintf(buf, PAGE_SIZE, "supported\n");
}
return 0;
@ -323,6 +328,7 @@ 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);
F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@ -376,6 +382,7 @@ static struct attribute *f2fs_feat_attrs[] = {
ATTR_LIST(inode_checksum),
ATTR_LIST(flexible_inline_xattr),
ATTR_LIST(quota_ino),
ATTR_LIST(inode_crtime),
NULL,
};

4
include/linux/f2fs_fs.h
View File

@ -253,8 +253,10 @@ struct f2fs_inode {
__le16 i_inline_xattr_size; /* inline xattr size, unit: 4 bytes */
__le32 i_projid; /* project id */
__le32 i_inode_checksum;/* inode meta checksum */
__le64 i_crtime; /* creation time */
__le32 i_crtime_nsec; /* creation time in nano scale */
__le32 i_extra_end[0]; /* for attribute size calculation */
};
} __packed;
__le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */
};
__le32 i_nid[DEF_NIDS_PER_INODE]; /* direct(2), indirect(2),