1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
16 	struct xfs_buf		*rbmbp;	/* bitmap block buffer */
17 	struct xfs_buf		*sumbp;	/* summary block buffer */
19 	xfs_fileoff_t		rbmoff;	/* bitmap block number */
20 	xfs_fileoff_t		sumoff;	/* summary block number */
31 	if (mp->m_rtxblklog >= 0)  in xfs_rtx_to_rtb()
32 		return start + (rtx << mp->m_rtxblklog);  in xfs_rtx_to_rtb()
33 	return start + (rtx * mp->m_sb.sb_rextsize);  in xfs_rtx_to_rtb()
42 	if (likely(mp->m_rtxblklog >= 0))  in xfs_rgbno_to_rtx()
43 		return rgbno >> mp->m_rtxblklog;  in xfs_rgbno_to_rtx()
44 	return rgbno / mp->m_sb.sb_rextsize;  in xfs_rgbno_to_rtx()
52 	if (mp->m_rtxblklog >= 0)  in xfs_rtbxlen_to_blen()
53 		return rtbxlen << mp->m_rtxblklog;  in xfs_rtbxlen_to_blen()
55 	return rtbxlen * mp->m_sb.sb_rextsize;  in xfs_rtbxlen_to_blen()
63 	if (mp->m_rtxblklog >= 0)  in xfs_rtxlen_to_extlen()
64 		return rtxlen << mp->m_rtxblklog;  in xfs_rtxlen_to_extlen()
66 	return rtxlen * mp->m_sb.sb_rextsize;  in xfs_rtxlen_to_extlen()
75 	if (mp->m_rtxblklog >= 0)  in xfs_extlen_to_rtxmod()
76 		return len & mp->m_rtxblkmask;  in xfs_extlen_to_rtxmod()
78 	return len % mp->m_sb.sb_rextsize;  in xfs_extlen_to_rtxmod()
86 	if (mp->m_rtxblklog >= 0)  in xfs_extlen_to_rtxlen()
87 		return len >> mp->m_rtxblklog;  in xfs_extlen_to_rtxlen()
89 	return len / mp->m_sb.sb_rextsize;  in xfs_extlen_to_rtxlen()
92 /* Convert an rt block count into an rt extent count. */
98 	if (likely(mp->m_rtxblklog >= 0))  in xfs_blen_to_rtbxlen()
99 		return blen >> mp->m_rtxblklog;  in xfs_blen_to_rtbxlen()
101 	return div_u64(blen, mp->m_sb.sb_rextsize);  in xfs_blen_to_rtbxlen()
104 /* Return the offset of a file block length within an rt extent. */
110 	if (likely(mp->m_rtxblklog >= 0))  in xfs_blen_to_rtxoff()
111 		return blen & mp->m_rtxblkmask;  in xfs_blen_to_rtxoff()
113 	return do_div(blen, mp->m_sb.sb_rextsize);  in xfs_blen_to_rtxoff()
116 /* Round this block count up to the nearest rt extent size. */
122 	return roundup_64(blen, mp->m_sb.sb_rextsize);  in xfs_blen_roundup_rtx()
125 /* Convert an rt block number into an rt extent number. */
131 	/* open-coded 64-bit masking operation */  in xfs_rtb_to_rtx()
132 	rtbno &= mp->m_groups[XG_TYPE_RTG].blkmask;  in xfs_rtb_to_rtx()
133 	if (likely(mp->m_rtxblklog >= 0))  in xfs_rtb_to_rtx()
134 		return rtbno >> mp->m_rtxblklog;  in xfs_rtb_to_rtx()
135 	return div_u64(rtbno, mp->m_sb.sb_rextsize);  in xfs_rtb_to_rtx()
138 /* Return the offset of a rtgroup block number within an rt extent. */
144 	return rgbno % mp->m_sb.sb_rextsize;  in xfs_rgbno_to_rtxoff()
147 /* Return the offset of an rt block number within an rt extent. */
153 	/* open-coded 64-bit masking operation */  in xfs_rtb_to_rtxoff()
154 	rtbno &= mp->m_groups[XG_TYPE_RTG].blkmask;  in xfs_rtb_to_rtxoff()
155 	if (likely(mp->m_rtxblklog >= 0))  in xfs_rtb_to_rtxoff()
156 		return rtbno & mp->m_rtxblkmask;  in xfs_rtb_to_rtxoff()
157 	return do_div(rtbno, mp->m_sb.sb_rextsize);  in xfs_rtb_to_rtxoff()
160 /* Round this file block offset up to the nearest rt extent size. */
166 	return roundup_64(off, mp->m_sb.sb_rextsize);  in xfs_fileoff_roundup_rtx()
169 /* Round this file block offset down to the nearest rt extent size. */
175 	return rounddown_64(off, mp->m_sb.sb_rextsize);  in xfs_fileoff_rounddown_rtx()
178 /* Convert an rt extent number to a file block offset in the rt bitmap file. */
185 		return div_u64(rtx, mp->m_rtx_per_rbmblock);  in xfs_rtx_to_rbmblock()
187 	return rtx >> mp->m_blkbit_log;  in xfs_rtx_to_rbmblock()
190 /* Convert an rt extent number to a word offset within an rt bitmap block. */
199 		div_u64_rem(rtx >> XFS_NBWORDLOG, mp->m_blockwsize, &mod);  in xfs_rtx_to_rbmword()
203 	return (rtx >> XFS_NBWORDLOG) & (mp->m_blockwsize - 1);  in xfs_rtx_to_rbmword()
206 /* Convert a file block offset in the rt bitmap file to an rt extent number. */
213 		return rbmoff * mp->m_rtx_per_rbmblock;  in xfs_rbmblock_to_rtx()
215 	return rbmoff << mp->m_blkbit_log;  in xfs_rbmblock_to_rtx()
218 /* Return a pointer to a bitmap word within a rt bitmap block. */
224 	struct xfs_mount	*mp = args->mp;  in xfs_rbmblock_wordptr()
226 	struct xfs_rtbuf_blkinfo *hdr = args->rbmbp->b_addr;  in xfs_rbmblock_wordptr()
231 		words = args->rbmbp->b_addr;  in xfs_rbmblock_wordptr()
244 	if (xfs_has_rtgroups(args->mp))  in xfs_rtbitmap_getword()
245 		return be32_to_cpu(word->rtg);  in xfs_rtbitmap_getword()
246 	return word->old;  in xfs_rtbitmap_getword()
258 	if (xfs_has_rtgroups(args->mp))  in xfs_rtbitmap_setword()
259 		word->rtg = cpu_to_be32(value);  in xfs_rtbitmap_setword()
261 		word->old = value;  in xfs_rtbitmap_setword()
265  * Convert a rt extent length and rt bitmap block number to a xfs_suminfo_t
266  * offset within the rt summary file.
274 	return log2_len * mp->m_sb.sb_rbmblocks + rbmoff;  in xfs_rtsumoffs()
278  * Convert an xfs_suminfo_t offset to a file block offset within the rt summary
287 		return rsumoff / mp->m_blockwsize;  in xfs_rtsumoffs_to_block()
293  * Convert an xfs_suminfo_t offset to an info word offset within an rt summary
294  * block.
301 	unsigned int		mask = mp->m_blockmask >> XFS_SUMINFOLOG;  in xfs_rtsumoffs_to_infoword()
304 		return rsumoff % mp->m_blockwsize;  in xfs_rtsumoffs_to_infoword()
309 /* Return a pointer to a summary info word within a rt summary block. */
316 	struct xfs_rtbuf_blkinfo *hdr = args->sumbp->b_addr;  in xfs_rsumblock_infoptr()
318 	if (xfs_has_rtgroups(args->mp))  in xfs_rsumblock_infoptr()
321 		info = args->sumbp->b_addr;  in xfs_rsumblock_infoptr()
334 	if (xfs_has_rtgroups(args->mp))  in xfs_suminfo_get()
335 		return be32_to_cpu(info->rtg);  in xfs_suminfo_get()
336 	return info->old;  in xfs_suminfo_get()
348 	if (xfs_has_rtgroups(args->mp)) {  in xfs_suminfo_add()
349 		be32_add_cpu(&info->rtg, delta);  in xfs_suminfo_add()
350 		return be32_to_cpu(info->rtg);  in xfs_suminfo_add()
353 	info->old += delta;  in xfs_suminfo_add()
354 	return info->old;  in xfs_suminfo_add()
386 int xfs_rtbitmap_read_buf(struct xfs_rtalloc_args *args, xfs_fileoff_t block);
387 int xfs_rtsummary_read_buf(struct xfs_rtalloc_args *args, xfs_fileoff_t block);
431 # define xfs_rtfree_extent(t,b,l)			(-ENOSYS)
437 	return -ENOSYS;  in xfs_rtfree_blocks()
439 # define xfs_rtalloc_query_range(m,t,l,h,f,p)		(-ENOSYS)
440 # define xfs_rtalloc_query_all(m,t,f,p)			(-ENOSYS)
441 # define xfs_rtbitmap_read_buf(a,b)			(-ENOSYS)
442 # define xfs_rtsummary_read_buf(a,b)			(-ENOSYS)
444 # define xfs_rtalloc_extent_is_free(m,t,s,l,i)		(-ENOSYS)