[PATCH v3 4/6] f2fs: support project quota

From: Chao Yu
Date: Tue Jul 25 2017 - 12:03:59 EST

From: Chao Yu <yuchao0@xxxxxxxxxx>

This patch adds to support plain project quota.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
v3:
- update i_projid only if sb has feature of project_quota.
Documentation/filesystems/f2fs.txt | 1 +
fs/f2fs/f2fs.h | 29 +++++++++++++++++++++++++++++
fs/f2fs/file.c | 13 -------------
fs/f2fs/inode.c | 24 +++++++++++++++++++++++-
fs/f2fs/namei.c | 31 +++++++++++++++++++++++++++++++
fs/f2fs/node.c | 7 ++++++-
fs/f2fs/super.c | 17 ++++++++++++++++-
include/linux/f2fs_fs.h | 3 +++
8 files changed, 109 insertions(+), 16 deletions(-)

diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index 273ccb26885e..b8f495a8b67d 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -164,6 +164,7 @@ io_bits=%u Set the bit size of write IO requests. It should be set
with "mode=lfs".
usrquota Enable plain user disk quota accounting.
grpquota Enable plain group disk quota accounting.
+prjquota Enable plain project quota accounting.

================================================================================
DEBUGFS ENTRIES
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 4426d7bcc860..1833eefe47b3 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -91,6 +91,7 @@ extern char *fault_name[FAULT_MAX];
#define F2FS_MOUNT_LFS 0x00040000
#define F2FS_MOUNT_USRQUOTA 0x00080000
#define F2FS_MOUNT_GRPQUOTA 0x00100000
+#define F2FS_MOUNT_PRJQUOTA 0x00200000

#define clear_opt(sbi, option) ((sbi)->mount_opt.opt &= ~F2FS_MOUNT_##option)
#define set_opt(sbi, option) ((sbi)->mount_opt.opt |= F2FS_MOUNT_##option)
@@ -114,6 +115,7 @@ struct f2fs_mount_info {
#define F2FS_FEATURE_BLKZONED 0x0002
#define F2FS_FEATURE_ATOMIC_WRITE 0x0004
#define F2FS_FEATURE_EXTRA_ATTR 0x0008
+#define F2FS_FEATURE_PRJQUOTA 0x0010

#define F2FS_HAS_FEATURE(sb, mask) \
((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
@@ -569,6 +571,7 @@ struct f2fs_inode_info {
struct rw_semaphore i_mmap_sem;

int i_extra_isize; /* size of extra space located in i_addr */
+ kprojid_t i_projid; /* id for project quota */
};

static inline void get_extent_info(struct extent_info *ext,
@@ -1886,6 +1889,20 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
*addr ^= mask;
}

+#define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
+#define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
+#define F2FS_FL_INHERITED (FS_PROJINHERIT_FL)
+
+static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
+{
+ if (S_ISDIR(mode))
+ return flags;
+ else if (S_ISREG(mode))
+ return flags & F2FS_REG_FLMASK;
+ else
+ return flags & F2FS_OTHER_FLMASK;
+}
+
/* used for f2fs_inode_info->flags */
enum {
FI_NEW_INODE, /* indicate newly allocated inode */
@@ -1915,6 +1932,7 @@ enum {
FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
FI_HOT_DATA, /* indicate file is hot */
FI_EXTRA_ATTR, /* indicate file has extra attribute */
+ FI_PROJ_INHERIT, /* indicate file inherits projectid */
};

static inline void __mark_inode_dirty_flag(struct inode *inode,
@@ -2238,6 +2256,12 @@ static inline int get_extra_isize(struct inode *inode)
(offsetof(struct f2fs_inode, i_extra_end) - \
offsetof(struct f2fs_inode, i_extra_isize)) \

+#define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
+#define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
+ ((offsetof(typeof(*f2fs_inode), field) + \
+ sizeof((f2fs_inode)->field)) \
+ <= (F2FS_OLD_ATTRIBUTE_SIZE + extra_isize)) \
+
/*
* file.c
*/
@@ -2835,6 +2859,11 @@ static inline int f2fs_sb_has_extra_attr(struct super_block *sb)
return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_EXTRA_ATTR);
}

+static inline int f2fs_sb_has_project_quota(struct super_block *sb)
+{
+ return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_PRJQUOTA);
+}
+
#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 ea26a3a5883d..e4a45f02cd4e 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1502,19 +1502,6 @@ static int f2fs_release_file(struct inode *inode, struct file *filp)
return 0;
}

-#define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
-#define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
-
-static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
-{
- if (S_ISDIR(mode))
- return flags;
- else if (S_ISREG(mode))
- return flags & F2FS_REG_FLMASK;
- else
- return flags & F2FS_OTHER_FLMASK;
-}
-
static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 0a6699a23dfb..f15e663a1a15 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -114,6 +114,7 @@ static int do_read_inode(struct inode *inode)
struct f2fs_inode_info *fi = F2FS_I(inode);
struct page *node_page;
struct f2fs_inode *ri;
+ projid_t i_projid;

/* Check if ino is within scope */
if (check_nid_range(sbi, inode->i_ino)) {
@@ -173,6 +174,16 @@ static int do_read_inode(struct inode *inode)
if (!need_inode_block_update(sbi, inode->i_ino))
fi->last_disk_size = inode->i_size;

+ if (fi->i_flags & FS_PROJINHERIT_FL)
+ set_inode_flag(inode, FI_PROJ_INHERIT);
+
+ if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
+ F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
+ i_projid = (projid_t)le32_to_cpu(ri->i_projid);
+ else
+ i_projid = F2FS_DEF_PROJID;
+ fi->i_projid = make_kprojid(&init_user_ns, i_projid);
+
f2fs_put_page(node_page, 1);

stat_inc_inline_xattr(inode);
@@ -299,9 +310,20 @@ int update_inode(struct inode *inode, struct page *node_page)
ri->i_generation = cpu_to_le32(inode->i_generation);
ri->i_dir_level = F2FS_I(inode)->i_dir_level;

- if (f2fs_has_extra_attr(inode))
+ if (f2fs_has_extra_attr(inode)) {
ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);

+ if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
+ F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
+ i_projid)) {
+ projid_t i_projid;
+
+ i_projid = from_kprojid(&init_user_ns,
+ F2FS_I(inode)->i_projid);
+ ri->i_projid = cpu_to_le32(i_projid);
+ }
+ }
+
__set_inode_rdev(inode, ri);
set_cold_node(inode, node_page);

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 26b4d2b54812..25d9452bc557 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -58,6 +58,13 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
goto fail;
}

+ if (f2fs_sb_has_project_quota(sbi->sb) &&
+ (F2FS_I(dir)->i_flags & FS_PROJINHERIT_FL))
+ F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
+ else
+ F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
+ F2FS_DEF_PROJID);
+
err = dquot_initialize(inode);
if (err)
goto fail_drop;
@@ -90,6 +97,12 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
stat_inc_inline_inode(inode);
stat_inc_inline_dir(inode);

+ F2FS_I(inode)->i_flags =
+ f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
+
+ if (F2FS_I(inode)->i_flags & FS_PROJINHERIT_FL)
+ set_inode_flag(inode, FI_PROJ_INHERIT);
+
trace_f2fs_new_inode(inode, 0);
return inode;

@@ -209,6 +222,11 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
!fscrypt_has_permitted_context(dir, inode))
return -EPERM;

+ if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
+ (!projid_eq(F2FS_I(dir)->i_projid,
+ F2FS_I(old_dentry->d_inode)->i_projid)))
+ return -EXDEV;
+
err = dquot_initialize(dir);
if (err)
return err;
@@ -729,6 +747,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto out;
}

+ if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
+ (!projid_eq(F2FS_I(new_dir)->i_projid,
+ F2FS_I(old_dentry->d_inode)->i_projid)))
+ return -EXDEV;
+
err = dquot_initialize(old_dir);
if (err)
goto out;
@@ -917,6 +940,14 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
!fscrypt_has_permitted_context(old_dir, new_inode)))
return -EPERM;

+ if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
+ !projid_eq(F2FS_I(new_dir)->i_projid,
+ F2FS_I(old_dentry->d_inode)->i_projid)) ||
+ (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
+ !projid_eq(F2FS_I(old_dir)->i_projid,
+ F2FS_I(new_dentry->d_inode)->i_projid)))
+ return -EXDEV;
+
err = dquot_initialize(old_dir);
if (err)
goto out;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 547b84fc10f6..11e2d49203b3 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2265,8 +2265,13 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
dst->i_links = cpu_to_le32(1);
dst->i_xattr_nid = 0;
dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR);
- if (dst->i_inline & F2FS_EXTRA_ATTR)
+ if (dst->i_inline & F2FS_EXTRA_ATTR) {
dst->i_extra_isize = src->i_extra_isize;
+ if (f2fs_sb_has_project_quota(sbi->sb) &&
+ F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
+ i_projid))
+ dst->i_projid = src->i_projid;
+ }

new_ni = old_ni;
new_ni.ino = ino;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index b30097190605..1241739f4d54 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -109,6 +109,7 @@ enum {
Opt_nolazytime,
Opt_usrquota,
Opt_grpquota,
+ Opt_prjquota,
Opt_err,
};

@@ -146,6 +147,7 @@ static match_table_t f2fs_tokens = {
{Opt_nolazytime, "nolazytime"},
{Opt_usrquota, "usrquota"},
{Opt_grpquota, "grpquota"},
+ {Opt_prjquota, "prjquota"},
{Opt_err, NULL},
};

@@ -392,9 +394,13 @@ static int parse_options(struct super_block *sb, char *options)
case Opt_grpquota:
set_opt(sbi, GRPQUOTA);
break;
+ case Opt_prjquota:
+ set_opt(sbi, PRJQUOTA);
+ break;
#else
case Opt_usrquota:
case Opt_grpquota:
+ case Opt_prjquota:
f2fs_msg(sb, KERN_INFO,
"quota operations not supported");
break;
@@ -814,6 +820,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
seq_puts(seq, ",usrquota");
if (test_opt(sbi, GRPQUOTA))
seq_puts(seq, ",grpquota");
+ if (test_opt(sbi, PRJQUOTA))
+ seq_puts(seq, ",prjquota");
#endif

return 0;
@@ -1172,6 +1180,12 @@ static void f2fs_quota_off_umount(struct super_block *sb)
f2fs_quota_off(sb, type);
}

+int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
+{
+ *projid = F2FS_I(inode)->i_projid;
+ return 0;
+}
+
static const struct dquot_operations f2fs_quota_operations = {
.get_reserved_space = f2fs_get_reserved_space,
.write_dquot = dquot_commit,
@@ -1181,6 +1195,7 @@ static const struct dquot_operations f2fs_quota_operations = {
.write_info = dquot_commit_info,
.alloc_dquot = dquot_alloc,
.destroy_dquot = dquot_destroy,
+ .get_projid = f2fs_get_projid,
.get_next_id = dquot_get_next_id,
};

@@ -1964,7 +1979,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_QUOTA
sb->dq_op = &f2fs_quota_operations;
sb->s_qcop = &f2fs_quotactl_ops;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
#endif

sb->s_op = &f2fs_sops;
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 0c79ddd40b70..50f176683676 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -239,6 +239,7 @@ struct f2fs_inode {
struct {
__le16 i_extra_isize; /* extra inode attribute size */
__le16 i_padding; /* padding */
+ __le32 i_projid; /* project id */
__le32 i_extra_end[0]; /* for attribute size calculation */
};
__le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */
@@ -522,4 +523,6 @@ enum {

#define S_SHIFT 12

+#define F2FS_DEF_PROJID 0 /* default project ID */
+
#endif /* _LINUX_F2FS_FS_H */
--
2.13.0.90.g1eb437020