| Message ID | 1426043003-31043-4-git-send-email-lixi@ddn.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Mar 11, 2015 at 6:03 AM, Li Xi <pkuelelixi@gmail.com> wrote: > This patch adds mount options for enabling/disabling project quota > accounting and enforcement. A new specific inode is also used for > project quota accounting. > > Signed-off-by: Li Xi <lixi@ddn.com> > Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> > Reviewed-by: Jan Kara <jack@suse.cz> > --- > fs/ext4/ext4.h | 8 +++- > fs/ext4/super.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++------- > 2 files changed, 93 insertions(+), 14 deletions(-) > > diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h > index 7acb2da..3443456 100644 > --- a/fs/ext4/ext4.h > +++ b/fs/ext4/ext4.h > @@ -208,6 +208,7 @@ struct ext4_io_submit { > #define EXT4_UNDEL_DIR_INO 6 /* Undelete directory inode */ > #define EXT4_RESIZE_INO 7 /* Reserved group descriptors inode */ > #define EXT4_JOURNAL_INO 8 /* Journal inode */ > +#define EXT4_PRJ_QUOTA_INO 9 /* Project quota inode */ This special inode is reserved for: EXT2_EXCLUDE_INO 9 /* The "exclude" inode, for snapshots */ I'm not sure if it's ok to use it for project quota. > > /* First non-reserved inode for old ext4 filesystems */ > #define EXT4_GOOD_OLD_FIRST_INO 11 > @@ -987,6 +988,7 @@ struct ext4_inode_info { > #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */ > #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */ > #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */ > +#define EXT4_MOUNT_PRJQUOTA 0x2000000 /* Project quota support */ > #define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */ > #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */ > #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */ > @@ -1169,7 +1171,8 @@ struct ext4_super_block { > __le32 s_overhead_clusters; /* overhead blocks/clusters in fs */ > __le32 s_backup_bgs[2]; /* groups with sparse_super2 SBs */ > __u8 s_encrypt_algos[4]; /* Encryption algorithms in use */ > - __le32 s_reserved[105]; /* Padding to the end of the block */ > + __le32 s_prj_quota_inum; /* inode for tracking project quota */ > + __le32 s_reserved[104]; /* Padding to the end of the block */ > __le32 s_checksum; /* crc32c(superblock) */ > }; > > @@ -1184,7 +1187,7 @@ struct ext4_super_block { > #define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */ > > /* Number of quota types we support */ > -#define EXT4_MAXQUOTAS 2 > +#define EXT4_MAXQUOTAS 3 > > /* > * fourth extended-fs super-block data in memory > @@ -1376,6 +1379,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino) > ino == EXT4_BOOT_LOADER_INO || > ino == EXT4_JOURNAL_INO || > ino == EXT4_RESIZE_INO || > + ino == EXT4_PRJ_QUOTA_INO || > (ino >= EXT4_FIRST_INO(sb) && > ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count)); > } > diff --git a/fs/ext4/super.c b/fs/ext4/super.c > index 04c6cc3..e057daa 100644 > --- a/fs/ext4/super.c > +++ b/fs/ext4/super.c > @@ -1036,8 +1036,8 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page, > } > > #ifdef CONFIG_QUOTA > -#define QTYPE2NAME(t) ((t) == USRQUOTA ? "user" : "group") > -#define QTYPE2MOPT(on, t) ((t) == USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA)) > +static char *quotatypes[] = INITQFNAMES; > +#define QTYPE2NAME(t) (quotatypes[t]) > > static int ext4_write_dquot(struct dquot *dquot); > static int ext4_acquire_dquot(struct dquot *dquot); > @@ -1135,7 +1135,8 @@ enum { > Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit, > Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback, > Opt_data_err_abort, Opt_data_err_ignore, > - Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, > + Opt_usrjquota, Opt_grpjquota, Opt_prjjquota, > + Opt_offusrjquota, Opt_offgrpjquota, Opt_offprjjquota, > Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota, > Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err, > Opt_usrquota, Opt_grpquota, Opt_i_version, > @@ -1190,6 +1191,8 @@ static const match_table_t tokens = { > {Opt_usrjquota, "usrjquota=%s"}, > {Opt_offgrpjquota, "grpjquota="}, > {Opt_grpjquota, "grpjquota=%s"}, > + {Opt_prjjquota, "prjjquota"}, > + {Opt_offprjjquota, "offprjjquota"}, > {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, > {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, > {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, > @@ -1412,11 +1415,14 @@ static const struct mount_opts { > {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA, > MOPT_SET | MOPT_Q}, > {Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA | > - EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q}, > + EXT4_MOUNT_GRPQUOTA | EXT4_MOUNT_PRJQUOTA), > + MOPT_CLEAR | MOPT_Q}, > {Opt_usrjquota, 0, MOPT_Q}, > {Opt_grpjquota, 0, MOPT_Q}, > + {Opt_prjjquota, 0, MOPT_Q}, > {Opt_offusrjquota, 0, MOPT_Q}, > {Opt_offgrpjquota, 0, MOPT_Q}, > + {Opt_offprjjquota, 0, MOPT_Q}, > {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT}, > {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT}, > {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT}, > @@ -1433,16 +1439,25 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, > kuid_t uid; > kgid_t gid; > int arg = 0; > - > #ifdef CONFIG_QUOTA > + char *prj_qf_name = "aquota.project"; If you already have inode numer in super-block why do you need this name here? Modern journalled quota is stored in special inodes and invisible from user-space. > + substring_t prj_qf_string = { > + .from = prj_qf_name, > + .to = &prj_qf_name[strlen(prj_qf_name)], > + }; > + > if (token == Opt_usrjquota) > return set_qf_name(sb, USRQUOTA, &args[0]); > else if (token == Opt_grpjquota) > return set_qf_name(sb, GRPQUOTA, &args[0]); > + else if (token == Opt_prjjquota) > + return set_qf_name(sb, PRJQUOTA, &prj_qf_string); > else if (token == Opt_offusrjquota) > return clear_qf_name(sb, USRQUOTA); > else if (token == Opt_offgrpjquota) > return clear_qf_name(sb, GRPQUOTA); > + else if (token == Opt_offprjjquota) > + return clear_qf_name(sb, PRJQUOTA); > #endif > switch (token) { > case Opt_noacl: > @@ -1668,19 +1683,28 @@ static int parse_options(char *options, struct super_block *sb, > } > #ifdef CONFIG_QUOTA > if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) && > - (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) { > + (test_opt(sb, USRQUOTA) || > + test_opt(sb, GRPQUOTA) || > + test_opt(sb, PRJQUOTA))) { > ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA " > "feature is enabled"); > return 0; > } > - if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { > + if (sbi->s_qf_names[USRQUOTA] || > + sbi->s_qf_names[GRPQUOTA] || > + sbi->s_qf_names[PRJQUOTA]) { > if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA]) > clear_opt(sb, USRQUOTA); > > if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA]) > clear_opt(sb, GRPQUOTA); > > - if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) { > + if (test_opt(sb, PRJQUOTA) && sbi->s_qf_names[PRJQUOTA]) > + clear_opt(sb, PRJQUOTA); > + > + if (test_opt(sb, GRPQUOTA) || > + test_opt(sb, USRQUOTA) || > + test_opt(sb, PRJQUOTA)) { > ext4_msg(sb, KERN_ERR, "old and new quota " > "format mixing"); > return 0; > @@ -1740,6 +1764,9 @@ static inline void ext4_show_quota_options(struct seq_file *seq, > > if (sbi->s_qf_names[GRPQUOTA]) > seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]); > + > + if (sbi->s_qf_names[PRJQUOTA]) > + seq_printf(seq, ",prjjquota=%s", sbi->s_qf_names[PRJQUOTA]); > #endif > } > > @@ -3944,7 +3971,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) > sb->s_qcop = &ext4_qctl_sysfile_operations; > else > sb->s_qcop = &ext4_qctl_operations; > - sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; > + sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; > #endif > memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid)); > > @@ -5040,6 +5067,46 @@ restore_opts: > return err; > } > > +static int ext4_statfs_project(struct super_block *sb, > + kprojid_t projid, struct kstatfs *buf) > +{ > + struct kqid qid; > + struct dquot *dquot; > + u64 limit; > + u64 curblock; > + > + qid = make_kqid_projid(projid); > + dquot = dqget(sb, qid); > + if (!dquot) > + return -ESRCH; > + spin_lock(&dq_data_lock); > + > + limit = dquot->dq_dqb.dqb_bsoftlimit ? > + dquot->dq_dqb.dqb_bsoftlimit : > + dquot->dq_dqb.dqb_bhardlimit; > + if (limit && buf->f_blocks * buf->f_bsize > limit) { > + curblock = dquot->dq_dqb.dqb_curspace / buf->f_bsize; > + buf->f_blocks = limit / buf->f_bsize; > + buf->f_bfree = buf->f_bavail = > + (buf->f_blocks > curblock) ? > + (buf->f_blocks - curblock) : 0; > + } > + > + limit = dquot->dq_dqb.dqb_isoftlimit ? > + dquot->dq_dqb.dqb_isoftlimit : > + dquot->dq_dqb.dqb_ihardlimit; > + if (limit && buf->f_files > limit) { > + buf->f_files = limit; > + buf->f_ffree = > + (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? > + (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; > + } > + > + spin_unlock(&dq_data_lock); > + dqput(dquot); > + return 0; > +} > + > static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) > { > struct super_block *sb = dentry->d_sb; > @@ -5048,6 +5115,7 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) > ext4_fsblk_t overhead = 0, resv_blocks; > u64 fsid; > s64 bfree; > + struct inode *inode = dentry->d_inode; > resv_blocks = EXT4_C2B(sbi, atomic64_read(&sbi->s_resv_clusters)); > > if (!test_opt(sb, MINIX_DF)) > @@ -5072,6 +5140,9 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) > buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL; > buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL; > > + if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT) && > + sb_has_quota_limits_enabled(sb, PRJQUOTA)) > + ext4_statfs_project(sb, EXT4_I(inode)->i_projid, buf); > return 0; > } > > @@ -5152,7 +5223,9 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot) > > /* Are we journaling quotas? */ > if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) || > - sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { > + sbi->s_qf_names[USRQUOTA] || > + sbi->s_qf_names[GRPQUOTA] || > + sbi->s_qf_names[PRJQUOTA]) { > dquot_mark_dquot_dirty(dquot); > return ext4_write_dquot(dquot); > } else { > @@ -5236,7 +5309,8 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id, > struct inode *qf_inode; > unsigned long qf_inums[EXT4_MAXQUOTAS] = { > le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum), > - le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum) > + le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum), > + le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum) > }; > > BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)); > @@ -5264,7 +5338,8 @@ static int ext4_enable_quotas(struct super_block *sb) > int type, err = 0; > unsigned long qf_inums[EXT4_MAXQUOTAS] = { > le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum), > - le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum) > + le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum), > + le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum) > }; > > sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; > -- > 1.7.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 7acb2da..3443456 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -208,6 +208,7 @@ struct ext4_io_submit { #define EXT4_UNDEL_DIR_INO 6 /* Undelete directory inode */ #define EXT4_RESIZE_INO 7 /* Reserved group descriptors inode */ #define EXT4_JOURNAL_INO 8 /* Journal inode */ +#define EXT4_PRJ_QUOTA_INO 9 /* Project quota inode */ /* First non-reserved inode for old ext4 filesystems */ #define EXT4_GOOD_OLD_FIRST_INO 11 @@ -987,6 +988,7 @@ struct ext4_inode_info { #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */ #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */ #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */ +#define EXT4_MOUNT_PRJQUOTA 0x2000000 /* Project quota support */ #define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */ #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */ #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */ @@ -1169,7 +1171,8 @@ struct ext4_super_block { __le32 s_overhead_clusters; /* overhead blocks/clusters in fs */ __le32 s_backup_bgs[2]; /* groups with sparse_super2 SBs */ __u8 s_encrypt_algos[4]; /* Encryption algorithms in use */ - __le32 s_reserved[105]; /* Padding to the end of the block */ + __le32 s_prj_quota_inum; /* inode for tracking project quota */ + __le32 s_reserved[104]; /* Padding to the end of the block */ __le32 s_checksum; /* crc32c(superblock) */ }; @@ -1184,7 +1187,7 @@ struct ext4_super_block { #define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */ /* Number of quota types we support */ -#define EXT4_MAXQUOTAS 2 +#define EXT4_MAXQUOTAS 3 /* * fourth extended-fs super-block data in memory @@ -1376,6 +1379,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino) ino == EXT4_BOOT_LOADER_INO || ino == EXT4_JOURNAL_INO || ino == EXT4_RESIZE_INO || + ino == EXT4_PRJ_QUOTA_INO || (ino >= EXT4_FIRST_INO(sb) && ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count)); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 04c6cc3..e057daa 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1036,8 +1036,8 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page, } #ifdef CONFIG_QUOTA -#define QTYPE2NAME(t) ((t) == USRQUOTA ? "user" : "group") -#define QTYPE2MOPT(on, t) ((t) == USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA)) +static char *quotatypes[] = INITQFNAMES; +#define QTYPE2NAME(t) (quotatypes[t]) static int ext4_write_dquot(struct dquot *dquot); static int ext4_acquire_dquot(struct dquot *dquot); @@ -1135,7 +1135,8 @@ enum { Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit, Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback, Opt_data_err_abort, Opt_data_err_ignore, - Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, + Opt_usrjquota, Opt_grpjquota, Opt_prjjquota, + Opt_offusrjquota, Opt_offgrpjquota, Opt_offprjjquota, Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota, Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err, Opt_usrquota, Opt_grpquota, Opt_i_version, @@ -1190,6 +1191,8 @@ static const match_table_t tokens = { {Opt_usrjquota, "usrjquota=%s"}, {Opt_offgrpjquota, "grpjquota="}, {Opt_grpjquota, "grpjquota=%s"}, + {Opt_prjjquota, "prjjquota"}, + {Opt_offprjjquota, "offprjjquota"}, {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, @@ -1412,11 +1415,14 @@ static const struct mount_opts { {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA, MOPT_SET | MOPT_Q}, {Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA | - EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q}, + EXT4_MOUNT_GRPQUOTA | EXT4_MOUNT_PRJQUOTA), + MOPT_CLEAR | MOPT_Q}, {Opt_usrjquota, 0, MOPT_Q}, {Opt_grpjquota, 0, MOPT_Q}, + {Opt_prjjquota, 0, MOPT_Q}, {Opt_offusrjquota, 0, MOPT_Q}, {Opt_offgrpjquota, 0, MOPT_Q}, + {Opt_offprjjquota, 0, MOPT_Q}, {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT}, {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT}, {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT}, @@ -1433,16 +1439,25 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, kuid_t uid; kgid_t gid; int arg = 0; - #ifdef CONFIG_QUOTA + char *prj_qf_name = "aquota.project"; + substring_t prj_qf_string = { + .from = prj_qf_name, + .to = &prj_qf_name[strlen(prj_qf_name)], + }; + if (token == Opt_usrjquota) return set_qf_name(sb, USRQUOTA, &args[0]); else if (token == Opt_grpjquota) return set_qf_name(sb, GRPQUOTA, &args[0]); + else if (token == Opt_prjjquota) + return set_qf_name(sb, PRJQUOTA, &prj_qf_string); else if (token == Opt_offusrjquota) return clear_qf_name(sb, USRQUOTA); else if (token == Opt_offgrpjquota) return clear_qf_name(sb, GRPQUOTA); + else if (token == Opt_offprjjquota) + return clear_qf_name(sb, PRJQUOTA); #endif switch (token) { case Opt_noacl: @@ -1668,19 +1683,28 @@ static int parse_options(char *options, struct super_block *sb, } #ifdef CONFIG_QUOTA if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) && - (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) { + (test_opt(sb, USRQUOTA) || + test_opt(sb, GRPQUOTA) || + test_opt(sb, PRJQUOTA))) { ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA " "feature is enabled"); return 0; } - if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { + if (sbi->s_qf_names[USRQUOTA] || + sbi->s_qf_names[GRPQUOTA] || + sbi->s_qf_names[PRJQUOTA]) { if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA]) clear_opt(sb, USRQUOTA); if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA]) clear_opt(sb, GRPQUOTA); - if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) { + if (test_opt(sb, PRJQUOTA) && sbi->s_qf_names[PRJQUOTA]) + clear_opt(sb, PRJQUOTA); + + if (test_opt(sb, GRPQUOTA) || + test_opt(sb, USRQUOTA) || + test_opt(sb, PRJQUOTA)) { ext4_msg(sb, KERN_ERR, "old and new quota " "format mixing"); return 0; @@ -1740,6 +1764,9 @@ static inline void ext4_show_quota_options(struct seq_file *seq, if (sbi->s_qf_names[GRPQUOTA]) seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]); + + if (sbi->s_qf_names[PRJQUOTA]) + seq_printf(seq, ",prjjquota=%s", sbi->s_qf_names[PRJQUOTA]); #endif } @@ -3944,7 +3971,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sb->s_qcop = &ext4_qctl_sysfile_operations; else sb->s_qcop = &ext4_qctl_operations; - sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; + sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; #endif memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid)); @@ -5040,6 +5067,46 @@ restore_opts: return err; } +static int ext4_statfs_project(struct super_block *sb, + kprojid_t projid, struct kstatfs *buf) +{ + struct kqid qid; + struct dquot *dquot; + u64 limit; + u64 curblock; + + qid = make_kqid_projid(projid); + dquot = dqget(sb, qid); + if (!dquot) + return -ESRCH; + spin_lock(&dq_data_lock); + + limit = dquot->dq_dqb.dqb_bsoftlimit ? + dquot->dq_dqb.dqb_bsoftlimit : + dquot->dq_dqb.dqb_bhardlimit; + if (limit && buf->f_blocks * buf->f_bsize > limit) { + curblock = dquot->dq_dqb.dqb_curspace / buf->f_bsize; + buf->f_blocks = limit / buf->f_bsize; + buf->f_bfree = buf->f_bavail = + (buf->f_blocks > curblock) ? + (buf->f_blocks - curblock) : 0; + } + + limit = dquot->dq_dqb.dqb_isoftlimit ? + dquot->dq_dqb.dqb_isoftlimit : + dquot->dq_dqb.dqb_ihardlimit; + if (limit && buf->f_files > limit) { + buf->f_files = limit; + buf->f_ffree = + (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? + (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + } + + spin_unlock(&dq_data_lock); + dqput(dquot); + return 0; +} + static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; @@ -5048,6 +5115,7 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) ext4_fsblk_t overhead = 0, resv_blocks; u64 fsid; s64 bfree; + struct inode *inode = dentry->d_inode; resv_blocks = EXT4_C2B(sbi, atomic64_read(&sbi->s_resv_clusters)); if (!test_opt(sb, MINIX_DF)) @@ -5072,6 +5140,9 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL; buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL; + if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT) && + sb_has_quota_limits_enabled(sb, PRJQUOTA)) + ext4_statfs_project(sb, EXT4_I(inode)->i_projid, buf); return 0; } @@ -5152,7 +5223,9 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot) /* Are we journaling quotas? */ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) || - sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { + sbi->s_qf_names[USRQUOTA] || + sbi->s_qf_names[GRPQUOTA] || + sbi->s_qf_names[PRJQUOTA]) { dquot_mark_dquot_dirty(dquot); return ext4_write_dquot(dquot); } else { @@ -5236,7 +5309,8 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id, struct inode *qf_inode; unsigned long qf_inums[EXT4_MAXQUOTAS] = { le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum), - le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum) + le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum), + le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum) }; BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)); @@ -5264,7 +5338,8 @@ static int ext4_enable_quotas(struct super_block *sb) int type, err = 0; unsigned long qf_inums[EXT4_MAXQUOTAS] = { le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum), - le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum) + le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum), + le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum) }; sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;