fs/jfs/jfs_imap.c

57 #define AG_LOCK(imap,agno)		mutex_lock(&imap->im_aglock[agno])
58 #define AG_UNLOCK(imap,agno)		mutex_unlock(&imap->im_aglock[agno])
848 	int iagno, ino, extno, bitno, sword, agno;
882 	agno = BLKTOAG(JFS_IP(ip)->agstart, JFS_SBI(ip->i_sb));
886 	AG_LOCK(imap, agno);
897 		AG_UNLOCK(imap, agno);
917 		AG_UNLOCK(imap, agno);
926 	if (imap->im_agctl[agno].numfree > imap->im_agctl[agno].numinos) {
929 		AG_UNLOCK(imap, agno);
938 	    imap->im_agctl[agno].numfree < 96 ||
939 	    (imap->im_agctl[agno].numfree < 288 &&
940 	     (((imap->im_agctl[agno].numfree * 100) /
941 	       imap->im_agctl[agno].numinos) <= 25))) {
952 			if ((fwd = imap->im_agctl[agno].inofree) >= 0) {
958 					AG_UNLOCK(imap, agno);
975 			    cpu_to_le32(imap->im_agctl[agno].inofree);
977 			imap->im_agctl[agno].inofree = iagno;
1001 		imap->im_agctl[agno].numfree += 1;
1006 		AG_UNLOCK(imap, agno);
1036 		if ((fwd = imap->im_agctl[agno].extfree) >= 0) {
1131 		    cpu_to_le32(imap->im_agctl[agno].extfree);
1133 		imap->im_agctl[agno].extfree = iagno;
1145 				imap->im_agctl[agno].extfree =
1167 			imap->im_agctl[agno].inofree =
1205 	imap->im_agctl[agno].numfree -= (INOSPEREXT - 1);
1206 	imap->im_agctl[agno].numinos -= INOSPEREXT;
1265 	AG_UNLOCK(imap, agno);
1281 	AG_UNLOCK(imap, agno);
1323 	int nwords, rem, i, agno, dn_numag;
1343 		agno = dbNextAG(JFS_SBI(pip->i_sb)->ipbmap);
1344 		AG_LOCK(imap, agno);
1358 	agno = BLKTOAG(JFS_IP(pip)->agstart, JFS_SBI(pip->i_sb));
1360 	if (agno < 0 || agno > dn_numag)
1363 	if (atomic_read(&JFS_SBI(pip->i_sb)->bmap->db_active[agno])) {
1369 		agno = dbNextAG(JFS_SBI(pip->i_sb)->ipbmap);
1370 		AG_LOCK(imap, agno);
1382 	AG_LOCK(imap, agno);
1391 		AG_UNLOCK(imap, agno);
1400 	addext = (imap->im_agctl[agno].numfree < 32 && iagp->nfreeexts);
1443 				AG_UNLOCK(imap, agno);
1499 					AG_UNLOCK(imap, agno);
1526 				AG_UNLOCK(imap, agno);
1566 				AG_UNLOCK(imap, agno);
1587 	rc = diAllocAG(imap, agno, dir, ip);
1589 	AG_UNLOCK(imap, agno);
1597 	return (diAllocAny(imap, agno, dir, ip));
1602  * NAME:	diAllocAG(imap,agno,dir,ip)
1619  *	agno	- allocation group to allocate from.
1631 diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
1638 	numfree = imap->im_agctl[agno].numfree;
1639 	numinos = imap->im_agctl[agno].numinos;
1666 		if ((rc = diAllocExt(imap, agno, ip)) != -ENOSPC)
1673 	return (diAllocIno(imap, agno, ip));
1678  * NAME:	diAllocAny(imap,agno,dir,iap)
1689  *	agno	- primary allocation group (to avoid).
1701 diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
1707 	/* try to allocate from the ags following agno up to
1710 	for (ag = agno + 1; ag <= maxag; ag++) {
1721 	/* try to allocate from the ags in front of agno.
1723 	for (ag = 0; ag < agno; ag++) {
1741  * NAME:	diAllocIno(imap,agno,ip)
1755  *	agno	- allocation group.
1765 static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
1773 	if ((iagno = imap->im_agctl[agno].inofree) < 0)
1858  * NAME:	diAllocExt(imap,agno,ip)
1879  *	agno	- allocation group number.
1889 static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
1898 	if ((iagno = imap->im_agctl[agno].extfree) < 0) {
1902 		if ((rc = diNewIAG(imap, &iagno, agno, &mp))) {
1910 		    cpu_to_le64(AGTOBLK(agno, imap->im_ipimap));
2008 	int extno, bitno, agno, sword, rc;
2043 	agno = BLKTOAG(le64_to_cpu(iagp->agstart), JFS_SBI(imap->im_ipimap->i_sb));
2092 			imap->im_agctl[agno].inofree =
2102 	imap->im_agctl[agno].numfree -= 1;
2154 	int agno, iagno, fwd, back, freei = 0, sword, rc;
2181 	agno = BLKTOAG(le64_to_cpu(iagp->agstart), sbi);
2182 	if (agno >= MAXAG || agno < 0)
2213 			if ((fwd = imap->im_agctl[agno].extfree) >= 0) {
2229 		freei = imap->im_agctl[agno].inofree;
2253 		hint = ((s64) agno << sbi->bmap->db_agl2size) - 1;
2304 			imap->im_agctl[agno].extfree =
2318 			imap->im_agctl[agno].extfree = iagno;
2330 		    cpu_to_le32(imap->im_agctl[agno].inofree);
2332 		imap->im_agctl[agno].inofree = iagno;
2363 	imap->im_agctl[agno].numfree += (INOSPEREXT - 1);
2364 	imap->im_agctl[agno].numinos += INOSPEREXT;
2398  * NAME:	diNewIAG(imap,iagnop,agno)
2414  *	agno	- allocation group number.
2437 diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)