This patch adds mount options for enabling/disabling project quota accounting and enforcement. A new specific inode is also used for project quota accounting.
Ported to rhel7: https://patchwork.ozlabs.org/patch/517148/ Signed-off-by: Li Xi <l...@ddn.com> Signed-off-by: Dmitry Monakhov <dmonak...@openvz.org> Reviewed-by: Andreas Dilger <adil...@dilger.ca> Reviewed-by: Jan Kara <j...@suse.cz> Signed-off-by: Stanislav Kinsburskiy <skinsbur...@virtuozzo.com> --- fs/ext4/ext4.h | 2 +- fs/ext4/super.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++----- 2 files changed, 52 insertions(+), 6 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 271e93e..0dc3fbd 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1212,7 +1212,7 @@ 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 diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 95bf12f..8c823c55 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1057,8 +1057,8 @@ 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); @@ -4131,7 +4131,7 @@ 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)); @@ -5241,6 +5241,46 @@ 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; @@ -5249,6 +5289,7 @@ 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)) @@ -5287,6 +5328,9 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_blocks -= balloon_blocks >> (sbi->s_balloon_ino->i_blkbits - 9); } + 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; } @@ -5451,7 +5495,8 @@ 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)); @@ -5479,7 +5524,8 @@ 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; _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
