Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig
index 4a09975..7218314 100644
--- a/fs/quota/Kconfig
+++ b/fs/quota/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# Quota configuration
#
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index fc20e06..6e826b4 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -9,7 +9,7 @@
* on the Melbourne quota system as used on BSD derived systems. The internal
* implementation is based on one of the several variants of the LINUX
* inode-subsystem with added complexity of the diskquota system.
- *
+ *
* Author: Marco van Wieringen <mvw@planets.elm.net>
*
* Fixes: Dmitry Gorodchanin <pgmdsg@ibi.com>, 11 Feb 96
@@ -51,7 +51,7 @@
* Added journalled quota support, fix lock inversion problems
* Jan Kara, <jack@suse.cz>, 2003,2004
*
- * (C) Copyright 1994 - 1997 Marco van Wieringen
+ * (C) Copyright 1994 - 1997 Marco van Wieringen
*/
#include <linux/errno.h>
@@ -197,7 +197,7 @@
int qm;
spin_unlock(&dq_list_lock);
-
+
for (qm = 0; module_names[qm].qm_fmt_id &&
module_names[qm].qm_fmt_id != id; qm++)
;
@@ -223,9 +223,9 @@
/*
* Dquot List Management:
- * The quota code uses three lists for dquot management: the inuse_list,
- * free_dquots, and dquot_hash[] array. A single dquot structure may be
- * on all three lists, depending on its current state.
+ * The quota code uses four lists for dquot management: the inuse_list,
+ * free_dquots, dqi_dirty_list, and dquot_hash[] array. A single dquot
+ * structure may be on some of those lists, depending on its current state.
*
* All dquots are placed to the end of inuse_list when first created, and this
* list is used for invalidate operation, which must look at every dquot.
@@ -236,6 +236,11 @@
* dqstats.free_dquots gives the number of dquots on the list. When
* dquot is invalidated it's completely released from memory.
*
+ * Dirty dquots are added to the dqi_dirty_list of quota_info when mark
+ * dirtied, and this list is searched when writing dirty dquots back to
+ * quota file. Note that some filesystems do dirty dquot tracking on their
+ * own (e.g. in a journal) and thus don't use dqi_dirty_list.
+ *
* Dquots with a specific identity (device, type and id) are placed on
* one of the dquot_hash[] hash chains. The provides an efficient search
* mechanism to locate a specific dquot.
@@ -424,10 +429,11 @@
struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
mutex_lock(&dquot->dq_lock);
- if (!test_bit(DQ_READ_B, &dquot->dq_flags))
+ if (!test_bit(DQ_READ_B, &dquot->dq_flags)) {
ret = dqopt->ops[dquot->dq_id.type]->read_dqblk(dquot);
- if (ret < 0)
- goto out_iolock;
+ if (ret < 0)
+ goto out_iolock;
+ }
/* Make sure flags update is visible after dquot has been filled */
smp_mb__before_atomic();
set_bit(DQ_READ_B, &dquot->dq_flags);
@@ -1049,7 +1055,9 @@
struct list_head *tofree_head)
{
struct inode *inode;
+#ifdef CONFIG_QUOTA_DEBUG
int reserved = 0;
+#endif
spin_lock(&sb->s_inode_list_lock);
list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
@@ -1061,8 +1069,10 @@
*/
spin_lock(&dq_data_lock);
if (!IS_NOQUOTA(inode)) {
+#ifdef CONFIG_QUOTA_DEBUG
if (unlikely(inode_get_rsv_space(inode) > 0))
reserved = 1;
+#endif
remove_inode_dquot_ref(inode, type, tofree_head);
}
spin_unlock(&dq_data_lock);
@@ -1663,7 +1673,7 @@
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!dquots[cnt])
continue;
- if (flags & DQUOT_SPACE_RESERVE) {
+ if (reserve) {
ret = dquot_add_space(dquots[cnt], 0, number, flags,
&warn[cnt]);
} else {
@@ -1676,13 +1686,11 @@
if (!dquots[cnt])
continue;
spin_lock(&dquots[cnt]->dq_dqb_lock);
- if (flags & DQUOT_SPACE_RESERVE) {
- dquots[cnt]->dq_dqb.dqb_rsvspace -=
- number;
- } else {
- dquots[cnt]->dq_dqb.dqb_curspace -=
- number;
- }
+ if (reserve)
+ dquot_free_reserved_space(dquots[cnt],
+ number);
+ else
+ dquot_decr_space(dquots[cnt], number);
spin_unlock(&dquots[cnt]->dq_dqb_lock);
}
spin_unlock(&inode->i_lock);
@@ -1733,7 +1741,7 @@
continue;
/* Back out changes we already did */
spin_lock(&dquots[cnt]->dq_dqb_lock);
- dquots[cnt]->dq_dqb.dqb_curinodes--;
+ dquot_decr_inodes(dquots[cnt], 1);
spin_unlock(&dquots[cnt]->dq_dqb_lock);
}
goto warn_put_all;
@@ -1993,8 +2001,8 @@
&warn_to[cnt]);
if (ret)
goto over_quota;
- ret = dquot_add_space(transfer_to[cnt], cur_space, rsv_space, 0,
- &warn_to[cnt]);
+ ret = dquot_add_space(transfer_to[cnt], cur_space, rsv_space,
+ DQUOT_SPACE_WARN, &warn_to[cnt]);
if (ret) {
spin_lock(&transfer_to[cnt]->dq_dqb_lock);
dquot_decr_inodes(transfer_to[cnt], inode_usage);
@@ -2397,7 +2405,7 @@
out_fmt:
put_quota_format(fmt);
- return error;
+ return error;
}
/* Reenable quotas on remount RW */
@@ -2723,7 +2731,7 @@
if (check_blim) {
if (!dm->dqb_bsoftlimit ||
- dm->dqb_curspace + dm->dqb_rsvspace < dm->dqb_bsoftlimit) {
+ dm->dqb_curspace + dm->dqb_rsvspace <= dm->dqb_bsoftlimit) {
dm->dqb_btime = 0;
clear_bit(DQ_BLKS_B, &dquot->dq_flags);
} else if (!(di->d_fieldmask & QC_SPC_TIMER))
@@ -2732,7 +2740,7 @@
}
if (check_ilim) {
if (!dm->dqb_isoftlimit ||
- dm->dqb_curinodes < dm->dqb_isoftlimit) {
+ dm->dqb_curinodes <= dm->dqb_isoftlimit) {
dm->dqb_itime = 0;
clear_bit(DQ_INODES_B, &dquot->dq_flags);
} else if (!(di->d_fieldmask & QC_INO_TIMER))
@@ -2775,7 +2783,7 @@
struct qc_type_state *tstate;
struct quota_info *dqopt = sb_dqopt(sb);
int type;
-
+
memset(state, 0, sizeof(*state));
for (type = 0; type < MAXQUOTAS; type++) {
if (!sb_has_quota_active(sb, type))
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index f0cbf58..cb13fb7 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -331,9 +331,9 @@
return flags;
}
-static int quota_getstate(struct super_block *sb, struct fs_quota_stat *fqs)
+static int quota_getstate(struct super_block *sb, int type,
+ struct fs_quota_stat *fqs)
{
- int type;
struct qc_state state;
int ret;
@@ -349,14 +349,7 @@
if (!fqs->qs_flags)
return -ENOSYS;
fqs->qs_incoredqs = state.s_incoredqs;
- /*
- * GETXSTATE quotactl has space for just one set of time limits so
- * report them for the first enabled quota type
- */
- for (type = 0; type < MAXQUOTAS; type++)
- if (state.s_state[type].flags & QCI_ACCT_ENABLED)
- break;
- BUG_ON(type == MAXQUOTAS);
+
fqs->qs_btimelimit = state.s_state[type].spc_timelimit;
fqs->qs_itimelimit = state.s_state[type].ino_timelimit;
fqs->qs_rtbtimelimit = state.s_state[type].rt_spc_timelimit;
@@ -391,22 +384,22 @@
return 0;
}
-static int quota_getxstate(struct super_block *sb, void __user *addr)
+static int quota_getxstate(struct super_block *sb, int type, void __user *addr)
{
struct fs_quota_stat fqs;
int ret;
if (!sb->s_qcop->get_state)
return -ENOSYS;
- ret = quota_getstate(sb, &fqs);
+ ret = quota_getstate(sb, type, &fqs);
if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
return -EFAULT;
return ret;
}
-static int quota_getstatev(struct super_block *sb, struct fs_quota_statv *fqs)
+static int quota_getstatev(struct super_block *sb, int type,
+ struct fs_quota_statv *fqs)
{
- int type;
struct qc_state state;
int ret;
@@ -422,14 +415,7 @@
if (!fqs->qs_flags)
return -ENOSYS;
fqs->qs_incoredqs = state.s_incoredqs;
- /*
- * GETXSTATV quotactl has space for just one set of time limits so
- * report them for the first enabled quota type
- */
- for (type = 0; type < MAXQUOTAS; type++)
- if (state.s_state[type].flags & QCI_ACCT_ENABLED)
- break;
- BUG_ON(type == MAXQUOTAS);
+
fqs->qs_btimelimit = state.s_state[type].spc_timelimit;
fqs->qs_itimelimit = state.s_state[type].ino_timelimit;
fqs->qs_rtbtimelimit = state.s_state[type].rt_spc_timelimit;
@@ -455,7 +441,7 @@
return 0;
}
-static int quota_getxstatev(struct super_block *sb, void __user *addr)
+static int quota_getxstatev(struct super_block *sb, int type, void __user *addr)
{
struct fs_quota_statv fqs;
int ret;
@@ -474,7 +460,7 @@
default:
return -EINVAL;
}
- ret = quota_getstatev(sb, &fqs);
+ ret = quota_getstatev(sb, type, &fqs);
if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
return -EFAULT;
return ret;
@@ -744,9 +730,9 @@
case Q_XQUOTARM:
return quota_rmxquota(sb, addr);
case Q_XGETQSTAT:
- return quota_getxstate(sb, addr);
+ return quota_getxstate(sb, type, addr);
case Q_XGETQSTATV:
- return quota_getxstatev(sb, addr);
+ return quota_getxstatev(sb, type, addr);
case Q_XSETQLIM:
return quota_setxquota(sb, type, id, addr);
case Q_XGETQUOTA:
@@ -791,7 +777,8 @@
/* Return true if quotactl command is manipulating quota on/off state */
static bool quotactl_cmd_onoff(int cmd)
{
- return (cmd == Q_QUOTAON) || (cmd == Q_QUOTAOFF);
+ return (cmd == Q_QUOTAON) || (cmd == Q_QUOTAOFF) ||
+ (cmd == Q_XQUOTAON) || (cmd == Q_XQUOTAOFF);
}
/*
diff --git a/fs/quota/quota_tree.c b/fs/quota/quota_tree.c
index bb3f59b..a6f856f 100644
--- a/fs/quota/quota_tree.c
+++ b/fs/quota/quota_tree.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* vfsv0 quota IO operations on file
*/
diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c
index 7ac5298..c740e55 100644
--- a/fs/quota/quota_v1.c
+++ b/fs/quota/quota_v1.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/quota.h>
@@ -127,7 +128,7 @@
{
struct inode *inode = sb_dqopt(sb)->files[type];
ulong blocks;
- size_t off;
+ size_t off;
struct v2_disk_dqheader dqhead;
ssize_t size;
loff_t isize;
diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c
index a73e5b3..53429c2 100644
--- a/fs/quota/quota_v2.c
+++ b/fs/quota/quota_v2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* vfsv0 quota IO operations on file
*/
@@ -78,7 +79,7 @@
struct v2_disk_dqheader dqhead;
static const uint quota_magics[] = V2_INITQMAGICS;
static const uint quota_versions[] = V2_INITQVERSIONS;
-
+
if (v2_read_header(sb, type, &dqhead))
return 0;
if (le32_to_cpu(dqhead.dqh_magic) != quota_magics[type] ||