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path: root/fs/ext4/super.c
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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c126
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 "
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-07 04:26:07 +0300