diff options
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 126 |
1 files changed, 95 insertions, 31 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 3ec8708989ca..6db81fbcbaa6 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -78,6 +78,8 @@ static int ext4_feature_set_ok(struct super_block *sb, int readonly); static void ext4_destroy_lazyinit_thread(void); static void ext4_unregister_li_request(struct super_block *sb); static void ext4_clear_request_list(void); +static struct inode *ext4_get_journal_inode(struct super_block *sb, + unsigned int journal_inum); /* * Lock ordering @@ -1267,7 +1269,7 @@ enum { Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, 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_dax, + Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, Opt_dax, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit, Opt_lazytime, Opt_nolazytime, Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity, @@ -1327,6 +1329,7 @@ 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"}, @@ -1546,8 +1549,11 @@ 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_offusrjquota, 0, MOPT_Q}, @@ -1836,13 +1842,17 @@ static int parse_options(char *options, struct super_block *sb, return 0; } #ifdef CONFIG_QUOTA - if (ext4_has_feature_quota(sb) && - (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) { - ext4_msg(sb, KERN_INFO, "Quota feature enabled, usrquota and grpquota " - "mount options ignored."); - clear_opt(sb, USRQUOTA); - clear_opt(sb, GRPQUOTA); - } else if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { + /* + * We do the test below only for project quotas. 'usrquota' and + * 'grpquota' mount options are allowed even without quota feature + * to support legacy quotas in quota files. + */ + if (test_opt(sb, PRJQUOTA) && !ext4_has_feature_project(sb)) { + ext4_msg(sb, KERN_ERR, "Project quota feature not enabled. " + "Cannot enable project quota enforcement."); + return 0; + } + if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA]) clear_opt(sb, USRQUOTA); @@ -2741,7 +2751,6 @@ static int ext4_run_li_request(struct ext4_li_request *elr) sb = elr->lr_super; ngroups = EXT4_SB(sb)->s_groups_count; - sb_start_write(sb); for (group = elr->lr_next_group; group < ngroups; group++) { gdp = ext4_get_group_desc(sb, group, NULL); if (!gdp) { @@ -2768,8 +2777,6 @@ static int ext4_run_li_request(struct ext4_li_request *elr) elr->lr_next_sched = jiffies + elr->lr_timeout; elr->lr_next_group = group + 1; } - sb_end_write(sb); - return ret; } @@ -2834,19 +2841,43 @@ cont_thread: mutex_unlock(&eli->li_list_mtx); goto exit_thread; } - list_for_each_safe(pos, n, &eli->li_request_list) { + int err = 0; + int progress = 0; elr = list_entry(pos, struct ext4_li_request, lr_request); - if (time_after_eq(jiffies, elr->lr_next_sched)) { - if (ext4_run_li_request(elr) != 0) { - /* error, remove the lazy_init job */ - ext4_remove_li_request(elr); - continue; + if (time_before(jiffies, elr->lr_next_sched)) { + if (time_before(elr->lr_next_sched, next_wakeup)) + next_wakeup = elr->lr_next_sched; + continue; + } + if (down_read_trylock(&elr->lr_super->s_umount)) { + if (sb_start_write_trylock(elr->lr_super)) { + progress = 1; + /* + * We hold sb->s_umount, sb can not + * be removed from the list, it is + * now safe to drop li_list_mtx + */ + mutex_unlock(&eli->li_list_mtx); + err = ext4_run_li_request(elr); + sb_end_write(elr->lr_super); + mutex_lock(&eli->li_list_mtx); + n = pos->next; } + up_read((&elr->lr_super->s_umount)); + } + /* error, remove the lazy_init job */ + if (err) { + ext4_remove_li_request(elr); + continue; + } + if (!progress) { + elr->lr_next_sched = jiffies + + (prandom_u32() + % (EXT4_DEF_LI_MAX_START_DELAY * HZ)); } - if (time_before(elr->lr_next_sched, next_wakeup)) next_wakeup = elr->lr_next_sched; } @@ -3179,6 +3210,8 @@ int ext4_calculate_overhead(struct super_block *sb) { struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_super_block *es = sbi->s_es; + struct inode *j_inode; + unsigned int j_blocks, j_inum = le32_to_cpu(es->s_journal_inum); ext4_group_t i, ngroups = ext4_get_groups_count(sb); ext4_fsblk_t overhead = 0; char *buf = (char *) get_zeroed_page(GFP_NOFS); @@ -3209,10 +3242,23 @@ int ext4_calculate_overhead(struct super_block *sb) memset(buf, 0, PAGE_SIZE); cond_resched(); } - /* Add the internal journal blocks as well */ + + /* + * Add the internal journal blocks whether the journal has been + * loaded or not + */ if (sbi->s_journal && !sbi->journal_bdev) overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen); - + else if (ext4_has_feature_journal(sb) && !sbi->s_journal) { + j_inode = ext4_get_journal_inode(sb, j_inum); + if (j_inode) { + j_blocks = j_inode->i_size >> sb->s_blocksize_bits; + overhead += EXT4_NUM_B2C(sbi, j_blocks); + iput(j_inode); + } else { + ext4_msg(sb, KERN_ERR, "can't get journal size"); + } + } sbi->s_overhead = overhead; smp_wmb(); free_page((unsigned long) buf); @@ -4208,18 +4254,16 @@ static void ext4_init_journal_params(struct super_block *sb, journal_t *journal) write_unlock(&journal->j_state_lock); } -static journal_t *ext4_get_journal(struct super_block *sb, - unsigned int journal_inum) +static struct inode *ext4_get_journal_inode(struct super_block *sb, + unsigned int journal_inum) { struct inode *journal_inode; - journal_t *journal; - - BUG_ON(!ext4_has_feature_journal(sb)); - - /* First, test for the existence of a valid inode on disk. Bad - * things happen if we iget() an unused inode, as the subsequent - * iput() will try to delete it. */ + /* + * Test for the existence of a valid inode on disk. Bad things + * happen if we iget() an unused inode, as the subsequent iput() + * will try to delete it. + */ journal_inode = ext4_iget(sb, journal_inum); if (IS_ERR(journal_inode)) { ext4_msg(sb, KERN_ERR, "no journal found"); @@ -4239,6 +4283,20 @@ static journal_t *ext4_get_journal(struct super_block *sb, iput(journal_inode); return NULL; } + return journal_inode; +} + +static journal_t *ext4_get_journal(struct super_block *sb, + unsigned int journal_inum) +{ + struct inode *journal_inode; + journal_t *journal; + + BUG_ON(!ext4_has_feature_journal(sb)); + + journal_inode = ext4_get_journal_inode(sb, journal_inum); + if (!journal_inode) + return NULL; journal = jbd2_journal_init_inode(journal_inode); if (!journal) { @@ -5250,12 +5308,18 @@ static int ext4_enable_quotas(struct super_block *sb) le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum), le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum) }; + bool quota_mopt[EXT4_MAXQUOTAS] = { + test_opt(sb, USRQUOTA), + test_opt(sb, GRPQUOTA), + test_opt(sb, PRJQUOTA), + }; sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; for (type = 0; type < EXT4_MAXQUOTAS; type++) { if (qf_inums[type]) { err = ext4_quota_enable(sb, type, QFMT_VFS_V1, - DQUOT_USAGE_ENABLED); + DQUOT_USAGE_ENABLED | + (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); if (err) { ext4_warning(sb, "Failed to enable quota tracking " |