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ocfs2: Implement quota recovery

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Implement functions for recovery after a crash. Functions just
read local quota file and sync info to global quota file.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Jan Kara
2008-10-20 23:50:38 +02:00
committed by Mark Fasheh
parent 171bf93ce1
commit 2205363dce
6 changed files with 527 additions and 31 deletions
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21
fs/ocfs2/quota.h
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@@ -33,6 +33,17 @@ struct ocfs2_dquot {
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 */
@@ -49,6 +60,10 @@ struct ocfs2_mem_dqinfo {
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)
@@ -67,6 +82,12 @@ 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,