[PATCH 2/2] quota: merge sb->s_quota_types into sb->s_dquot.flags

From: Konstantin Khlebnikov
Date: Thu Feb 12 2015 - 04:36:58 EST

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This patch converts supported quota types bitmask (sb->s_quota_types)
into per-type flag DQUOT_SUPPORTED in sb->s_dquot.flags.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
---
fs/ext2/super.c | 3 ++-
fs/ext3/super.c | 3 ++-
fs/ext4/super.c | 3 ++-
fs/gfs2/ops_fstype.c | 3 ++-
fs/jfs/super.c | 3 ++-
fs/ocfs2/super.c | 3 ++-
fs/quota/quota.c | 6 +++---
fs/reiserfs/super.c | 3 ++-
fs/xfs/xfs_super.c | 5 ++++-
include/linux/fs.h | 1 -
include/linux/quota.h | 4 +++-
include/linux/quotaops.h | 10 ++++++++++
12 files changed, 34 insertions(+), 13 deletions(-)

diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index ae55fdd..9e2b1c3 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1099,7 +1099,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_QUOTA
sb->dq_op = &dquot_operations;
sb->s_qcop = &dquot_quotactl_ops;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
#endif

root = ext2_iget(sb, EXT2_ROOT_INO);
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index d4dbf3c..fc71d08 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -2012,7 +2012,8 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
#ifdef CONFIG_QUOTA
sb->s_qcop = &ext3_qctl_operations;
sb->dq_op = &ext3_quota_operations;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
#endif
memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ac64edb..e36d73c 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3925,7 +3925,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sb->s_qcop = &dquot_quotactl_sysfile_ops;
else
sb->s_qcop = &ext4_qctl_operations;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
#endif
memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));

diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 8633ad3..3e8f590 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1074,7 +1074,8 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent
sb->s_export_op = &gfs2_export_ops;
sb->s_xattr = gfs2_xattr_handlers;
sb->s_qcop = &gfs2_quotactl_ops;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
sb->s_time_gran = 1;
sb->s_maxbytes = MAX_LFS_FILESIZE;
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 16c3a95..b820b76 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -540,7 +540,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_QUOTA
sb->dq_op = &dquot_operations;
sb->s_qcop = &dquot_quotactl_ops;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
#endif

/*
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 87a1f76..1db5903 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -2059,7 +2059,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
sb->s_export_op = &ocfs2_export_ops;
sb->s_qcop = &dquot_quotactl_sysfile_ops;
sb->dq_op = &ocfs2_quota_operations;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
sb->s_xattr = ocfs2_xattr_handlers;
sb->s_time_gran = 1;
sb->s_flags |= MS_NOATIME;
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index d14a799..28d54bc 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -50,7 +50,7 @@ static void quota_sync_one(struct super_block *sb, void *arg)
int type = *(int *)arg;

if (sb->s_qcop && sb->s_qcop->quota_sync &&
- (sb->s_quota_types & (1 << type)))
+ sb_has_quota_supported(sb, type))
sb->s_qcop->quota_sync(sb, type);
}

@@ -446,12 +446,12 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
if (type >= (XQM_COMMAND(cmd) ? XQM_MAXQUOTAS : MAXQUOTAS))
return -EINVAL;
/*
- * Quota not supported on this fs? Check this before s_quota_types
+ * Quota not supported on this fs? Check this before sb_dqopt flags
* since they needn't be set if quota is not supported at all.
*/
if (!sb->s_qcop)
return -ENOSYS;
- if (!(sb->s_quota_types & (1 << type)))
+ if (!sb_has_quota_supported(sb, type))
return -EINVAL;

ret = check_quotactl_permission(sb, type, cmd, id);
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 71fbbe3..f08740f 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1643,7 +1643,8 @@ static int read_super_block(struct super_block *s, int offset)
#ifdef CONFIG_QUOTA
s->s_qcop = &reiserfs_qctl_operations;
s->dq_op = &reiserfs_quota_operations;
- s->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
#endif

/*
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index f2449fd..f8806c89 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -55,6 +55,7 @@
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/parser.h>
+#include <linux/quotaops.h>

static const struct super_operations xfs_super_operations;
static kmem_zone_t *xfs_ioend_zone;
@@ -1434,7 +1435,9 @@ xfs_fs_fill_super(
sb->s_export_op = &xfs_export_operations;
#ifdef CONFIG_XFS_QUOTA
sb->s_qcop = &xfs_quotactl_operations;
- sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
+ sb_set_quota_supported(sb, USRQUOTA);
+ sb_set_quota_supported(sb, GRPQUOTA);
+ sb_set_quota_supported(sb, PRJQUOTA);
#endif
sb->s_op = &xfs_super_operations;

diff --git a/include/linux/fs.h b/include/linux/fs.h
index f125b88..e1d19b6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1257,7 +1257,6 @@ struct super_block {
struct backing_dev_info *s_bdi;
struct mtd_info *s_mtd;
struct hlist_node s_instances;
- unsigned int s_quota_types; /* Bitmask of supported quota types */
struct quota_info s_dquot; /* Diskquota specific options */

struct sb_writers s_writers;
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 205b4f7..3c6cc80 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -391,13 +391,15 @@ struct quota_format_type {

/* Quota state flags - they actually come in two flavors - for users and groups */
enum {
- _DQUOT_USAGE_ENABLED = 0, /* Track disk usage for users */
+ _DQUOT_SUPPORTED = 0, /* Quota type supported by fs */
+ _DQUOT_USAGE_ENABLED, /* Track disk usage for users */
_DQUOT_LIMITS_ENABLED, /* Enforce quota limits for users */
_DQUOT_SUSPENDED, /* User diskquotas are off, but
* we have necessary info in
* memory to turn them on */
_DQUOT_STATE_FLAGS
};
+#define DQUOT_SUPPORTED (1 << _DQUOT_SUPPORTED * MAXQUOTAS)
#define DQUOT_USAGE_ENABLED (1 << _DQUOT_USAGE_ENABLED * MAXQUOTAS)
#define DQUOT_LIMITS_ENABLED (1 << _DQUOT_LIMITS_ENABLED * MAXQUOTAS)
#define DQUOT_SUSPENDED (1 << _DQUOT_SUSPENDED * MAXQUOTAS)
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 8778ec4..e431a87 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -110,10 +110,20 @@ static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
return sb_dqopt(sb)->info + type;
}

+static inline void sb_set_quota_supported(struct super_block *sb, unsigned type)
+{
+ sb_dqopt(sb)->flags |= dquot_state_flag(DQUOT_SUPPORTED, type);
+}
+
/*
* Functions for checking status of quota
*/

+static inline bool sb_has_quota_supported(struct super_block *sb, unsigned type)
+{
+ return sb_dqopt(sb)->flags & dquot_state_flag(DQUOT_SUPPORTED, type);
+}
+
static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type)
{
return sb_dqopt(sb)->flags &

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Next message: Michal Simek: "Re: [PATCH 2/2] ARM: dts: zynq: Add linux, stdout-path and stdout-path"
Previous message: Konstantin Khlebnikov: "[PATCH] quota: optimize i_dquot access"
In reply to: Konstantin Khlebnikov: "[PATCH 1/2] quota: reorder flags in quota state"
Next in thread: Jan Kara: "Re: [PATCH 2/2] quota: merge sb->s_quota_types into sb->s_dquot.flags"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]