mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Tejun Heo](/assets/img/avatar_default.png)
ocfs2_quota_wq is not depended upon during memory reclaim and, with cmwq, there's no reason to use a dedicated workqueue. Drop ocfs2_quota_wq and use system_wq instead. dqi_sync_work is already sync canceled on quota disable and no further synchronization is necessary. This change makes ocfs2_quota_setup/shutdown() noops. Both functions removed. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <joel.becker@oracle.com>
117 lines
4.3 KiB
C
117 lines
4.3 KiB
C
/*
|
|
* 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"
|
|
|
|
/*
|
|
* In-memory structures
|
|
*/
|
|
struct ocfs2_dquot {
|
|
struct dquot dq_dquot; /* Generic VFS dquot */
|
|
loff_t dq_local_off; /* Offset in the local quota file */
|
|
u64 dq_local_phys_blk; /* Physical block carrying quota structure */
|
|
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 */
|
|
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 */
|
|
u64 dqi_giblk; /* Number of block with global information header */
|
|
struct buffer_head *dqi_lqi_bh; /* Buffer head with local quota file inode */
|
|
struct buffer_head *dqi_libh; /* Buffer with local 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_validate_quota_block(struct super_block *sb, struct buffer_head *bh);
|
|
int ocfs2_read_quota_phys_block(struct inode *inode, u64 p_block,
|
|
struct buffer_head **bh);
|
|
int ocfs2_create_local_dquot(struct dquot *dquot);
|
|
int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot);
|
|
int ocfs2_local_write_dquot(struct dquot *dquot);
|
|
|
|
extern const struct dquot_operations ocfs2_quota_operations;
|
|
extern struct quota_format_type ocfs2_quota_format;
|
|
|
|
#endif /* _OCFS2_QUOTA_H */
|