fs/xfs/xfs_rtalloc.c

214  * Attempt to allocate an extent minlen<=len<=maxlen starting from
223 	xfs_rtxlen_t		minlen,	/* minimum length to allocate */
272 		if (minlen < maxlen) {
276 			if (thislen >= minlen && thislen > bestlen) {
294 	if (minlen > maxlen || besti == -1) {
326  * Allocate an extent of length minlen<=len<=maxlen, starting at block
335 	xfs_rtxlen_t		minlen,	/* minimum length to allocate */
346 	ASSERT(minlen % prod == 0);
357 		 * If not, allocate what there is, if it's at least minlen.
360 		if (maxlen < minlen)
368 			if (maxlen < minlen)
385  * Allocate an extent of length minlen<=len<=maxlen, starting as near
393 	xfs_rtxlen_t		minlen,	/* minimum length to allocate */
405 	int			log2len; /* log2 of minlen */
408 	ASSERT(minlen % prod == 0);
420 	if (maxlen < minlen)
426 	error = xfs_rtallocate_extent_exact(args, start, minlen, maxlen, len,
435 	ASSERT(minlen != 0);
436 	log2len = xfs_highbit32(minlen);
467 						bbno + i, minlen, maxavail, len,
502 							bbno + j, minlen,
547 	xfs_rtxlen_t		minlen,	/* minimum length to allocate */
573 		error = xfs_rtallocate_extent_block(args, i, minlen, maxlen,
590  * Allocate an extent of length minlen<=len<=maxlen, with no position
597 	xfs_rtxlen_t		minlen,	/* minimum length to allocate */
606 	ASSERT(minlen % prod == 0);
620 		error = xfs_rtalloc_sumlevel(args, l, minlen, maxlen, prod, len,
630 	if (minlen > --maxlen)
632 	ASSERT(minlen != 0);
636 	 * Loop over sizes, from maxlen down to minlen.
639 	 * but make sure the specified minlen/maxlen are in the possible range
642 	for (l = xfs_highbit32(maxlen); l >= xfs_highbit32(minlen); l--) {
644 				max_t(xfs_rtxlen_t, minlen, 1 << l),
1338 	xfs_extlen_t		minlen = mp->m_sb.sb_rextsize;
1360 	 * hint, increase minlen by that amount so that the allocator won't
1365 		minlen += orig_offset - ap->offset;
1377 	raminlen = max_t(xfs_rtxlen_t, 1, xfs_extlen_to_rtxlen(mp, minlen));
1441 			minlen = align = mp->m_sb.sb_rextsize;