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Subject[PATCH 21/56] ocfs2: Assign feature bits and system inodes to quota feature and quota files
Date
From: Jan Kara <jack@suse.cz>

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/Kconfig | 2 ++
fs/ocfs2/inode.c | 2 ++
fs/ocfs2/ocfs2_fs.h | 21 ++++++++++++++++++---
fs/ocfs2/super.c | 17 +++++++++++++++++
4 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/fs/Kconfig b/fs/Kconfig
index d99bc0a..107f1cd 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -189,6 +189,8 @@ config OCFS2_FS
select CONFIGFS_FS
select JBD2
select CRC32
+ select QUOTA
+ select QUOTA_TREE
help
OCFS2 is a general purpose extent based shared disk cluster file
system with many similarities to ext3. It supports 64 bit inode
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index ec3497b..ec25d99 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -283,6 +283,8 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
} else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
+ } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
+ inode->i_flags |= S_NOQUOTA;
} else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino);
/* we can't actually hit this as read_inode can't
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 5e0c0d0..06e3bd6 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -94,7 +94,7 @@
| OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP \
| OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK \
| OCFS2_FEATURE_INCOMPAT_XATTR)
-#define OCFS2_FEATURE_RO_COMPAT_SUPP OCFS2_FEATURE_RO_COMPAT_UNWRITTEN
+#define OCFS2_FEATURE_RO_COMPAT_SUPP (OCFS2_FEATURE_RO_COMPAT_UNWRITTEN)

/*
* Heartbeat-only devices are missing journals and other files. The
@@ -163,6 +163,12 @@
*/
#define OCFS2_FEATURE_RO_COMPAT_UNWRITTEN 0x0001

+/*
+ * Maintain quota information for this filesystem
+ */
+#define OCFS2_FEATURE_RO_COMPAT_USRQUOTA 0x0002
+#define OCFS2_FEATURE_RO_COMPAT_GRPQUOTA 0x0004
+
/* The byte offset of the first backup block will be 1G.
* The following will be 4G, 16G, 64G, 256G and 1T.
*/
@@ -192,6 +198,7 @@
#define OCFS2_HEARTBEAT_FL (0x00000200) /* Heartbeat area */
#define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */
#define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */
+#define OCFS2_QUOTA_FL (0x00001000) /* Quota file */

/*
* Flags on ocfs2_dinode.i_dyn_features
@@ -329,13 +336,17 @@ enum {
#define OCFS2_FIRST_ONLINE_SYSTEM_INODE SLOT_MAP_SYSTEM_INODE
HEARTBEAT_SYSTEM_INODE,
GLOBAL_BITMAP_SYSTEM_INODE,
-#define OCFS2_LAST_GLOBAL_SYSTEM_INODE GLOBAL_BITMAP_SYSTEM_INODE
+ USER_QUOTA_SYSTEM_INODE,
+ GROUP_QUOTA_SYSTEM_INODE,
+#define OCFS2_LAST_GLOBAL_SYSTEM_INODE GROUP_QUOTA_SYSTEM_INODE
ORPHAN_DIR_SYSTEM_INODE,
EXTENT_ALLOC_SYSTEM_INODE,
INODE_ALLOC_SYSTEM_INODE,
JOURNAL_SYSTEM_INODE,
LOCAL_ALLOC_SYSTEM_INODE,
TRUNCATE_LOG_SYSTEM_INODE,
+ LOCAL_USER_QUOTA_SYSTEM_INODE,
+ LOCAL_GROUP_QUOTA_SYSTEM_INODE,
NUM_SYSTEM_INODES
};

@@ -349,6 +360,8 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
[SLOT_MAP_SYSTEM_INODE] = { "slot_map", 0, S_IFREG | 0644 },
[HEARTBEAT_SYSTEM_INODE] = { "heartbeat", OCFS2_HEARTBEAT_FL, S_IFREG | 0644 },
[GLOBAL_BITMAP_SYSTEM_INODE] = { "global_bitmap", 0, S_IFREG | 0644 },
+ [USER_QUOTA_SYSTEM_INODE] = { "aquota.user", OCFS2_QUOTA_FL, S_IFREG | 0644 },
+ [GROUP_QUOTA_SYSTEM_INODE] = { "aquota.group", OCFS2_QUOTA_FL, S_IFREG | 0644 },

/* Slot-specific system inodes (one copy per slot) */
[ORPHAN_DIR_SYSTEM_INODE] = { "orphan_dir:%04d", 0, S_IFDIR | 0755 },
@@ -356,7 +369,9 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
[INODE_ALLOC_SYSTEM_INODE] = { "inode_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_CHAIN_FL, S_IFREG | 0644 },
[JOURNAL_SYSTEM_INODE] = { "journal:%04d", OCFS2_JOURNAL_FL, S_IFREG | 0644 },
[LOCAL_ALLOC_SYSTEM_INODE] = { "local_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_LOCAL_ALLOC_FL, S_IFREG | 0644 },
- [TRUNCATE_LOG_SYSTEM_INODE] = { "truncate_log:%04d", OCFS2_DEALLOC_FL, S_IFREG | 0644 }
+ [TRUNCATE_LOG_SYSTEM_INODE] = { "truncate_log:%04d", OCFS2_DEALLOC_FL, S_IFREG | 0644 },
+ [LOCAL_USER_QUOTA_SYSTEM_INODE] = { "aquota.user:%04d", OCFS2_QUOTA_FL, S_IFREG | 0644 },
+ [LOCAL_GROUP_QUOTA_SYSTEM_INODE] = { "aquota.group:%04d", OCFS2_QUOTA_FL, S_IFREG | 0644 },
};

/* Parameter passed from mount.ocfs2 to module */
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 9e7accc..41bb019 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -225,6 +225,19 @@ static int ocfs2_sync_fs(struct super_block *sb, int wait)
return 0;
}

+static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
+{
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
+ && (ino == USER_QUOTA_SYSTEM_INODE
+ || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
+ return 0;
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
+ && (ino == GROUP_QUOTA_SYSTEM_INODE
+ || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
+ return 0;
+ return 1;
+}
+
static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
{
struct inode *new = NULL;
@@ -251,6 +264,8 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)

for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
+ if (!ocfs2_need_system_inode(osb, i))
+ continue;
new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
if (!new) {
ocfs2_release_system_inodes(osb);
@@ -281,6 +296,8 @@ static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
i < NUM_SYSTEM_INODES;
i++) {
+ if (!ocfs2_need_system_inode(osb, i))
+ continue;
new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
if (!new) {
ocfs2_release_system_inodes(osb);
--
1.5.6


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