1 files changed, 119 insertions, 0 deletions
diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h
new file mode 100644
index 000000000000..7365e2e08706
--- /dev/null
+++ b/fs/ocfs2/quota.h
@@ -0,0 +1,119 @@
+/*
+ * quota.h for OCFS2
+ *
+ * On disk quota structures for local and global quota file, in-memory
+ * structures.
+ *
+ */
+#ifndef _OCFS2_QUOTA_H
+#define _OCFS2_QUOTA_H
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/quota.h>
+#include <linux/list.h>
+#include <linux/dqblk_qtree.h>
+#include "ocfs2.h"
+/* Common stuff */
+/* id number of quota format */
+#define QFMT_OCFS2 3
+/*
+ * In-memory structures
+ */
+struct ocfs2_dquot {
+        struct dquot dq_dquot;  /* Generic VFS dquot */
+        loff_t dq_local_off;    /* Offset in the local quota file */
+        struct ocfs2_quota_chunk *dq_chunk;     /* Chunk dquot is in */
+        unsigned int dq_use_count;      /* Number of nodes having reference to this entry in global quota file */
+        s64 dq_origspace;       /* Last globally synced space usage */
+        s64 dq_originodes;      /* Last globally synced inode usage */
+};
+/* Description of one chunk to recover in memory */
+struct ocfs2_recovery_chunk {
+        struct list_head rc_list;       /* List of chunks */
+        int rc_chunk;                   /* Chunk number */
+        unsigned long *rc_bitmap;       /* Bitmap of entries to recover */
+};
+struct ocfs2_quota_recovery {
+        struct list_head r_list[MAXQUOTAS];     /* List of chunks to recover */
+};
+/* In-memory structure with quota header information */
+struct ocfs2_mem_dqinfo {
+        unsigned int dqi_type;          /* Quota type this structure describes */
+        unsigned int dqi_chunks;        /* Number of chunks in local quota file */
+        unsigned int dqi_blocks;        /* Number of blocks allocated for local quota file */
+        unsigned int dqi_syncms;        /* How often should we sync with other nodes */
+        unsigned int dqi_syncjiff;      /* Precomputed dqi_syncms in jiffies */
+        struct list_head dqi_chunk;     /* List of chunks */
+        struct inode *dqi_gqinode;      /* Global quota file inode */
+        struct ocfs2_lock_res dqi_gqlock;       /* Lock protecting quota information structure */
+        struct buffer_head *dqi_gqi_bh; /* Buffer head with global quota file inode - set only if inode lock is obtained */
+        int dqi_gqi_count;              /* Number of holders of dqi_gqi_bh */
+        struct buffer_head *dqi_lqi_bh; /* Buffer head with local quota file inode */
+        struct buffer_head *dqi_ibh;    /* Buffer with information header */
+        struct qtree_mem_dqinfo dqi_gi; /* Info about global file */
+        struct delayed_work dqi_sync_work;      /* Work for syncing dquots */
+        struct ocfs2_quota_recovery *dqi_rec;   /* Pointer to recovery
+                                                 * information, in case we
+                                                 * enable quotas on file
+                                                 * needing it */
+};
+static inline struct ocfs2_dquot *OCFS2_DQUOT(struct dquot *dquot)
+{
+        return container_of(dquot, struct ocfs2_dquot, dq_dquot);
+}
+struct ocfs2_quota_chunk {
+        struct list_head qc_chunk;      /* List of quotafile chunks */
+        int qc_num;                     /* Number of quota chunk */
+        struct buffer_head *qc_headerbh;        /* Buffer head with chunk header */
+};
+extern struct kmem_cache *ocfs2_dquot_cachep;
+extern struct kmem_cache *ocfs2_qf_chunk_cachep;
+extern struct qtree_fmt_operations ocfs2_global_ops;
+struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
+                                struct ocfs2_super *osb, int slot_num);
+int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
+                                struct ocfs2_quota_recovery *rec,
+                                int slot_num);
+void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec);
+ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data,
+                         size_t len, loff_t off);
+ssize_t ocfs2_quota_write(struct super_block *sb, int type,
+                          const char *data, size_t len, loff_t off);
+int ocfs2_global_read_info(struct super_block *sb, int type);
+int ocfs2_global_write_info(struct super_block *sb, int type);
+int ocfs2_global_read_dquot(struct dquot *dquot);
+int __ocfs2_sync_dquot(struct dquot *dquot, int freeing);
+static inline int ocfs2_sync_dquot(struct dquot *dquot)
+{
+        return __ocfs2_sync_dquot(dquot, 0);
+}
+static inline int ocfs2_global_release_dquot(struct dquot *dquot)
+{
+        return __ocfs2_sync_dquot(dquot, 1);
+}
+int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
+void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
+int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
+                           struct buffer_head **bh);
+extern struct dquot_operations ocfs2_quota_operations;
+extern struct quota_format_type ocfs2_quota_format;
+int ocfs2_quota_setup(void);
+void ocfs2_quota_shutdown(void);
+#endif /* _OCFS2_QUOTA_H */

diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h new file mode 100644 index 000000000000..7365e2e08706 --- /dev/null +++ b/fs/ocfs2/quota.h
@@ -0,0 +1,119 @@
	1	/*
	2	* quota.h for OCFS2
	3	*
	4	* On disk quota structures for local and global quota file, in-memory
	5	* structures.
	6	*
	7	*/
	8
	9	#ifndef _OCFS2_QUOTA_H
	10	#define _OCFS2_QUOTA_H
	11
	12	#include <linux/types.h>
	13	#include <linux/slab.h>
	14	#include <linux/quota.h>
	15	#include <linux/list.h>
	16	#include <linux/dqblk_qtree.h>
	17
	18	#include "ocfs2.h"
	19
	20	/* Common stuff */
	21	/* id number of quota format */
	22	#define QFMT_OCFS2 3
	23
	24	/*
	25	* In-memory structures
	26	*/
	27	struct ocfs2_dquot {
	28	struct dquot dq_dquot; /* Generic VFS dquot */
	29	loff_t dq_local_off; /* Offset in the local quota file */
	30	struct ocfs2_quota_chunk dq_chunk; / Chunk dquot is in */
	31	unsigned int dq_use_count; /* Number of nodes having reference to this entry in global quota file */
	32	s64 dq_origspace; /* Last globally synced space usage */
	33	s64 dq_originodes; /* Last globally synced inode usage */
	34	};
	35
	36	/* Description of one chunk to recover in memory */
	37	struct ocfs2_recovery_chunk {
	38	struct list_head rc_list; /* List of chunks */
	39	int rc_chunk; /* Chunk number */
	40	unsigned long rc_bitmap; / Bitmap of entries to recover */
	41	};
	42
	43	struct ocfs2_quota_recovery {
	44	struct list_head r_list[MAXQUOTAS]; /* List of chunks to recover */
	45	};
	46
	47	/* In-memory structure with quota header information */
	48	struct ocfs2_mem_dqinfo {
	49	unsigned int dqi_type; /* Quota type this structure describes */
	50	unsigned int dqi_chunks; /* Number of chunks in local quota file */
	51	unsigned int dqi_blocks; /* Number of blocks allocated for local quota file */
	52	unsigned int dqi_syncms; /* How often should we sync with other nodes */
	53	unsigned int dqi_syncjiff; /* Precomputed dqi_syncms in jiffies */
	54	struct list_head dqi_chunk; /* List of chunks */
	55	struct inode dqi_gqinode; / Global quota file inode */
	56	struct ocfs2_lock_res dqi_gqlock; /* Lock protecting quota information structure */
	57	struct buffer_head dqi_gqi_bh; / Buffer head with global quota file inode - set only if inode lock is obtained */
	58	int dqi_gqi_count; /* Number of holders of dqi_gqi_bh */
	59	struct buffer_head dqi_lqi_bh; / Buffer head with local quota file inode */
	60	struct buffer_head dqi_ibh; / Buffer with information header */
	61	struct qtree_mem_dqinfo dqi_gi; /* Info about global file */
	62	struct delayed_work dqi_sync_work; /* Work for syncing dquots */
	63	struct ocfs2_quota_recovery dqi_rec; / Pointer to recovery
	64	* information, in case we
	65	* enable quotas on file
	66	* needing it */
	67	};
	68
	69	static inline struct ocfs2_dquot OCFS2_DQUOT(struct dquot dquot)
	70	{
	71	return container_of(dquot, struct ocfs2_dquot, dq_dquot);
	72	}
	73
	74	struct ocfs2_quota_chunk {
	75	struct list_head qc_chunk; /* List of quotafile chunks */
	76	int qc_num; /* Number of quota chunk */
	77	struct buffer_head qc_headerbh; / Buffer head with chunk header */
	78	};
	79
	80	extern struct kmem_cache *ocfs2_dquot_cachep;
	81	extern struct kmem_cache *ocfs2_qf_chunk_cachep;
	82
	83	extern struct qtree_fmt_operations ocfs2_global_ops;
	84
	85	struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
	86	struct ocfs2_super *osb, int slot_num);
	87	int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
	88	struct ocfs2_quota_recovery *rec,
	89	int slot_num);
	90	void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec);
	91	ssize_t ocfs2_quota_read(struct super_block sb, int type, char data,
	92	size_t len, loff_t off);
	93	ssize_t ocfs2_quota_write(struct super_block *sb, int type,
	94	const char *data, size_t len, loff_t off);
	95	int ocfs2_global_read_info(struct super_block *sb, int type);
	96	int ocfs2_global_write_info(struct super_block *sb, int type);
	97	int ocfs2_global_read_dquot(struct dquot *dquot);
	98	int __ocfs2_sync_dquot(struct dquot *dquot, int freeing);
	99	static inline int ocfs2_sync_dquot(struct dquot *dquot)
	100	{
	101	return __ocfs2_sync_dquot(dquot, 0);
	102	}
	103	static inline int ocfs2_global_release_dquot(struct dquot *dquot)
	104	{
	105	return __ocfs2_sync_dquot(dquot, 1);
	106	}
	107
	108	int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
	109	void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
	110	int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
	111	struct buffer_head **bh);
	112
	113	extern struct dquot_operations ocfs2_quota_operations;
	114	extern struct quota_format_type ocfs2_quota_format;
	115
	116	int ocfs2_quota_setup(void);
	117	void ocfs2_quota_shutdown(void);
	118
	119	#endif /* _OCFS2_QUOTA_H */