[GFS2] split and annotate gfs2_log_head

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/glops.c

@@ -491,7 +491,7 @@ static void trans_go_xmote_bh(struct gfs2_glock *gl)
 	struct gfs2_sbd *sdp = gl->gl_sbd;
 	struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 	struct gfs2_glock *j_gl = ip->i_gl;
-	struct gfs2_log_header head;
+	struct gfs2_log_header_host head;
 	int error;
 
 	if (gl->gl_state != LM_ST_UNLOCKED &&

fs/gfs2/incore.h

@@ -41,7 +41,7 @@ struct gfs2_log_operations {
 	void (*lo_before_commit) (struct gfs2_sbd *sdp);
 	void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
 	void (*lo_before_scan) (struct gfs2_jdesc *jd,
-				struct gfs2_log_header *head, int pass);
+				struct gfs2_log_header_host *head, int pass);
 	int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
 				 struct gfs2_log_descriptor *ld, __be64 *ptr,
 				 int pass);

fs/gfs2/lops.c

@@ -182,7 +182,7 @@ static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
 }
 
 static void buf_lo_before_scan(struct gfs2_jdesc *jd,
-			       struct gfs2_log_header *head, int pass)
+			       struct gfs2_log_header_host *head, int pass)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
 
@@ -328,7 +328,7 @@ static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
 }
 
 static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
-				  struct gfs2_log_header *head, int pass)
+				  struct gfs2_log_header_host *head, int pass)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
 

fs/gfs2/lops.h

@@ -60,7 +60,7 @@ static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
 }
 
 static inline void lops_before_scan(struct gfs2_jdesc *jd,
-				    struct gfs2_log_header *head,
+				    struct gfs2_log_header_host *head,
 				    unsigned int pass)
 {
 	int x;

fs/gfs2/ondisk.c

@@ -251,7 +251,7 @@ void gfs2_dinode_print(const struct gfs2_dinode_host *di)
 	printk(KERN_INFO "  di_eattr = %llu\n", (unsigned long long)di->di_eattr);
 }
 
-void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf)
+void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf)
 {
 	const struct gfs2_log_header *str = buf;
 

fs/gfs2/recovery.c

@@ -132,10 +132,10 @@ void gfs2_revoke_clean(struct gfs2_sbd *sdp)
  */
 
 static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk,
-			  struct gfs2_log_header *head)
+			  struct gfs2_log_header_host *head)
 {
 	struct buffer_head *bh;
-	struct gfs2_log_header lh;
+	struct gfs2_log_header_host lh;
 	u32 hash;
 	int error;
 
@@ -143,7 +143,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk,
 	if (error)
 		return error;
 
-	memcpy(&lh, bh->b_data, sizeof(struct gfs2_log_header));
+	memcpy(&lh, bh->b_data, sizeof(struct gfs2_log_header));	/* XXX */
 	lh.lh_hash = 0;
 	hash = gfs2_disk_hash((char *)&lh, sizeof(struct gfs2_log_header));
 	gfs2_log_header_in(&lh, bh->b_data);
@@ -174,7 +174,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk,
  */
 
 static int find_good_lh(struct gfs2_jdesc *jd, unsigned int *blk,
-			struct gfs2_log_header *head)
+			struct gfs2_log_header_host *head)
 {
 	unsigned int orig_blk = *blk;
 	int error;
@@ -205,10 +205,10 @@ static int find_good_lh(struct gfs2_jdesc *jd, unsigned int *blk,
  * Returns: errno
  */
 
-static int jhead_scan(struct gfs2_jdesc *jd, struct gfs2_log_header *head)
+static int jhead_scan(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head)
 {
 	unsigned int blk = head->lh_blkno;
-	struct gfs2_log_header lh;
+	struct gfs2_log_header_host lh;
 	int error;
 
 	for (;;) {
@@ -245,9 +245,9 @@ static int jhead_scan(struct gfs2_jdesc *jd, struct gfs2_log_header *head)
  * Returns: errno
  */
 
-int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header *head)
+int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head)
 {
-	struct gfs2_log_header lh_1, lh_m;
+	struct gfs2_log_header_host lh_1, lh_m;
 	u32 blk_1, blk_2, blk_m;
 	int error;
 
@@ -320,7 +320,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start,
 		length = be32_to_cpu(ld->ld_length);
 
 		if (be32_to_cpu(ld->ld_header.mh_type) == GFS2_METATYPE_LH) {
-			struct gfs2_log_header lh;
+			struct gfs2_log_header_host lh;
 			error = get_log_header(jd, start, &lh);
 			if (!error) {
 				gfs2_replay_incr_blk(sdp, &start);
@@ -363,7 +363,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start,
  * Returns: errno
  */
 
-static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header *head)
+static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head)
 {
 	struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
 	struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
@@ -425,7 +425,7 @@ int gfs2_recover_journal(struct gfs2_jdesc *jd)
 {
 	struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
 	struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
-	struct gfs2_log_header head;
+	struct gfs2_log_header_host head;
 	struct gfs2_holder j_gh, ji_gh, t_gh;
 	unsigned long t;
 	int ro = 0;

fs/gfs2/recovery.h

@@ -26,7 +26,7 @@ int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
 void gfs2_revoke_clean(struct gfs2_sbd *sdp);
 
 int gfs2_find_jhead(struct gfs2_jdesc *jd,
-		    struct gfs2_log_header *head);
+		    struct gfs2_log_header_host *head);
 int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd);
 void gfs2_check_journals(struct gfs2_sbd *sdp);
 

fs/gfs2/super.c

@@ -508,7 +508,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
 	struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 	struct gfs2_glock *j_gl = ip->i_gl;
 	struct gfs2_holder t_gh;
-	struct gfs2_log_header head;
+	struct gfs2_log_header_host head;
 	int error;
 
 	error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
@@ -873,7 +873,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
 	struct gfs2_jdesc *jd;
 	struct lfcc *lfcc;
 	LIST_HEAD(list);
-	struct gfs2_log_header lh;
+	struct gfs2_log_header_host lh;
 	int error;
 
 	error = gfs2_jindex_hold(sdp, &ji_gh);

include/linux/gfs2_ondisk.h

@@ -405,6 +405,16 @@ struct gfs2_log_header {
 	__be32 lh_hash;
 };
 
+struct gfs2_log_header_host {
+	struct gfs2_meta_header lh_header;
+
+	__u64 lh_sequence;	/* Sequence number of this transaction */
+	__u32 lh_flags;	/* GFS2_LOG_HEAD_... */
+	__u32 lh_tail;		/* Block number of log tail */
+	__u32 lh_blkno;
+	__u32 lh_hash;
+};
+
 /*
  * Log type descriptor
  */
@@ -492,7 +502,7 @@ extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf);
 extern void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf);
 extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf);
 extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf);
-extern void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf);
+extern void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf);
 extern void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf);
 extern void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf);
 extern void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf);