From: Li Xi Subject: [v8 3/5] ext4: adds project quota support Date: Tue, 9 Dec 2014 13:22:26 +0800 Message-ID: <1418102548-5469-4-git-send-email-lixi@ddn.com> References: <1418102548-5469-1-git-send-email-lixi@ddn.com> To: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-api@vger.kernel.org, tytso@mit.edu, adilger@dilger.ca, jack@suse.cz, viro@zeniv.linux.org.uk, hch@infradead.org, dmonakhov@openvz.org Return-path: Received: from mail-pa0-f50.google.com ([209.85.220.50]:36012 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753023AbaLIFY0 (ORCPT ); Tue, 9 Dec 2014 00:24:26 -0500 In-Reply-To: <1418102548-5469-1-git-send-email-lixi@ddn.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: 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 Signed-off-by: Dmitry Monakhov Reviewed-by: Jan Kara --- fs/ext4/ext4.h | 8 +++- fs/ext4/super.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++------ 2 files changed, 90 insertions(+), 13 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 8bd1da9..136e18c 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 @@ -982,6 +983,7 @@ 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 */ @@ -1157,7 +1159,8 @@ struct ext4_super_block { __le32 s_grp_quota_inum; /* inode for tracking group quota */ __le32 s_overhead_clusters; /* overhead blocks/clusters in fs */ __le32 s_backup_bgs[2]; /* groups with sparse_super2 SBs */ - __le32 s_reserved[106]; /* Padding to the end of the block */ + __le32 s_prj_quota_inum; /* inode for tracking project quota */ + __le32 s_reserved[105]; /* Padding to the end of the block */ __le32 s_checksum; /* crc32c(superblock) */ }; @@ -1172,7 +1175,7 @@ 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 @@ -1364,6 +1367,7 @@ 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 6b67795..f5d8ca2 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1035,8 +1035,8 @@ 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); @@ -1128,10 +1128,11 @@ 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, + Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit, Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity, Opt_inode_readahead_blks, Opt_journal_ioprio, @@ -1183,6 +1184,8 @@ static const match_table_t tokens = { {Opt_usrjquota, "usrjquota=%s"}, {Opt_offgrpjquota, "grpjquota="}, {Opt_grpjquota, "grpjquota=%s"}, + {Opt_offprjjquota, "prjjquota="}, + {Opt_prjjquota, "prjjquota=%s"}, {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, @@ -1190,6 +1193,7 @@ static const match_table_t tokens = { {Opt_noquota, "noquota"}, {Opt_quota, "quota"}, {Opt_usrquota, "usrquota"}, + {Opt_prjquota, "prjquota"}, {Opt_barrier, "barrier=%u"}, {Opt_barrier, "barrier"}, {Opt_nobarrier, "nobarrier"}, @@ -1404,12 +1408,17 @@ static const struct mount_opts { MOPT_SET | MOPT_Q}, {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA, MOPT_SET | MOPT_Q}, + {Opt_prjquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_PRJQUOTA, + 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}, @@ -1432,10 +1441,14 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, 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, &args[0]); 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: @@ -1661,19 +1674,28 @@ 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; @@ -1733,6 +1755,9 @@ 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 } @@ -5037,6 +5062,46 @@ 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; @@ -5045,6 +5110,7 @@ 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)) @@ -5069,6 +5135,9 @@ 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; } @@ -5149,7 +5218,9 @@ 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 { @@ -5233,7 +5304,8 @@ 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)); @@ -5261,7 +5333,8 @@ 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