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Message-ID: <7c0526b9-0363-57dd-c20f-42e1a080d503@kernel.org>
Date: Wed, 24 Jan 2018 22:59:27 +0800
From: Chao Yu <chao@...nel.org>
To: Jaegeuk Kim <jaegeuk@...nel.org>
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Chao Yu <yuchao0@...wei.com>
Subject: Re: [PATCH v2] f2fs: support inode creation time
Hi Jaegeuk,
On 2018/1/24 13:38, Jaegeuk Kim wrote:
> On 01/22, Chao Yu wrote:
>> From: Chao Yu <yuchao0@...wei.com>
>>
>> This patch adds creation time field in inode layout to support showing
>> kstat.btime in ->statx.
>
> Hi Chao,
>
> Could you please check this patch again? I reverted this due to kernel panic.
I can't reproduce it, could you show me your call stack?
And, could you please have a try with kernel patch only?
Thanks,
>
> Thanks,
>
>>
>> Signed-off-by: Chao Yu <yuchao0@...wei.com>
>> ---
>> v2:
>> - add missing sysfs entry.
>> fs/f2fs/f2fs.h | 7 +++++++
>> fs/f2fs/file.c | 9 +++++++++
>> fs/f2fs/inode.c | 16 ++++++++++++++++
>> fs/f2fs/namei.c | 3 ++-
>> fs/f2fs/sysfs.c | 7 +++++++
>> include/linux/f2fs_fs.h | 2 ++
>> 6 files changed, 43 insertions(+), 1 deletion(-)
>>
>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>> index b7ba496af28f..6300ac5bcbe4 100644
>> --- a/fs/f2fs/f2fs.h
>> +++ b/fs/f2fs/f2fs.h
>> @@ -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)
>> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
>> index b9b1efe61d29..0873ba12ebc6 100644
>> --- a/fs/f2fs/file.c
>> +++ b/fs/f2fs/file.c
>> @@ -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;
>> diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
>> index 1dc77a40d0ad..99ee72bff628 100644
>> --- a/fs/f2fs/inode.c
>> +++ b/fs/f2fs/inode.c
>> @@ -278,6 +278,13 @@ 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 +428,15 @@ 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);
>> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
>> index 3ee97ba9d2d7..c4c94c7e9f4f 100644
>> --- a/fs/f2fs/namei.c
>> +++ b/fs/f2fs/namei.c
>> @@ -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);
>> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
>> index 41887e6ec1b3..d978c7b6ea04 100644
>> --- a/fs/f2fs/sysfs.c
>> +++ b/fs/f2fs/sysfs.c
>> @@ -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,
>> };
>>
>> diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
>> index 6eed677b6d9a..73af22dc300a 100644
>> --- a/include/linux/f2fs_fs.h
>> +++ b/include/linux/f2fs_fs.h
>> @@ -253,6 +253,8 @@ 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 */
>> };
>> __le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */
>> --
>> 2.14.1.145.gb3622a4ee
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