fs/gfs2/trans.h

Source file repositories/reference/linux-study-clean/fs/gfs2/trans.h

File Facts

System
Linux kernel
Corpus path
fs/gfs2/trans.h
Extension
.h
Size
1684 bytes
Lines
53
Domain
Core OS
Bucket
VFS And Filesystem Core
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __TRANS_DOT_H__
#define __TRANS_DOT_H__

#include <linux/buffer_head.h>
struct gfs2_sbd;
struct gfs2_rgrpd;
struct gfs2_glock;

#define RES_DINODE	1
#define RES_INDIRECT	1
#define RES_JDATA	1
#define RES_DATA	1
#define RES_LEAF	1
#define RES_RG_HDR	1
#define RES_RG_BIT	2
#define RES_EATTR	1
#define RES_STATFS	1
#define RES_QUOTA	2

/* reserve either the number of blocks to be allocated plus the rg header
 * block, or all of the blocks in the rg, whichever is smaller */
static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip, unsigned requested)
{
	struct gfs2_rgrpd *rgd = ip->i_res.rs_rgd;

	if (requested < rgd->rd_length)
		return requested + 1;
	return rgd->rd_length;
}

int __gfs2_trans_begin(struct gfs2_trans *tr, struct gfs2_sbd *sdp,
		       unsigned int blocks, unsigned int revokes,
		       unsigned long ip);
int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
		     unsigned int revokes);

void gfs2_trans_end(struct gfs2_sbd *sdp);
void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh);
void gfs2_trans_add_databufs(struct gfs2_glock *gl, struct folio *folio,
			     size_t from, size_t len);
void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh);
void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
void gfs2_trans_remove_revoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len);
void gfs2_trans_free(struct gfs2_sbd *sdp, struct gfs2_trans *tr);

#endif /* __TRANS_DOT_H__ */

Annotation

Implementation Notes