xfs: convert xfs_extlen_t to xfs_rtxlen_t in the rt allocator

In most of the filesystem, we use xfs_extlen_t to store the length of a
file (or AG) space mapping in units of fs blocks.  Unfortunately, the
realtime allocator also uses it to store the length of a rt space
mapping in units of rt extents.  This is confusing, since one rt extent
can consist of many fs blocks.

Separate the two by introducing a new type (xfs_rtxlen_t) to store the
length of a space mapping (in units of realtime extents) that would be
found in a file.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 29 insertions, 29 deletions

diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index f2eb0c8b595d..1789ae818662 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -144,7 +144,7 @@ xfs_rtallocate_range(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_trans_t	*tp,		/* transaction pointer */
 	xfs_rtblock_t	start,		/* start block to allocate */
-	xfs_extlen_t	len,		/* length to allocate */
+	xfs_rtxlen_t	len,		/* length to allocate */
 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
 	xfs_fsblock_t	*rsb)		/* in/out: summary block number */
 {
@@ -216,14 +216,14 @@ xfs_rtallocate_range(
  * Make sure we don't run off the end of the rt volume.  Be careful that
  * adjusting maxlen downwards doesn't cause us to fail the alignment checks.
  */
-static inline xfs_extlen_t
+static inline xfs_rtxlen_t
 xfs_rtallocate_clamp_len(
 	struct xfs_mount	*mp,
 	xfs_rtblock_t		startrtx,
-	xfs_extlen_t		rtxlen,
-	xfs_extlen_t		prod)
+	xfs_rtxlen_t		rtxlen,
+	xfs_rtxlen_t		prod)
 {
-	xfs_extlen_t		ret;
+	xfs_rtxlen_t		ret;
 
 	ret = min(mp->m_sb.sb_rextents, startrtx + rtxlen) - startrtx;
 	return rounddown(ret, prod);
@@ -240,13 +240,13 @@ xfs_rtallocate_extent_block(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_trans_t	*tp,		/* transaction pointer */
 	xfs_rtblock_t	bbno,		/* bitmap block number */
-	xfs_extlen_t	minlen,		/* minimum length to allocate */
-	xfs_extlen_t	maxlen,		/* maximum length to allocate */
-	xfs_extlen_t	*len,		/* out: actual length allocated */
+	xfs_rtxlen_t	minlen,		/* minimum length to allocate */
+	xfs_rtxlen_t	maxlen,		/* maximum length to allocate */
+	xfs_rtxlen_t	*len,		/* out: actual length allocated */
 	xfs_rtblock_t	*nextp,		/* out: next block to try */
 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
-	xfs_extlen_t	prod,		/* extent product factor */
+	xfs_rtxlen_t	prod,		/* extent product factor */
 	xfs_rtblock_t	*rtblock)	/* out: start block allocated */
 {
 	xfs_rtblock_t	besti;		/* best rtblock found so far */
@@ -319,7 +319,7 @@ xfs_rtallocate_extent_block(
 	 * Searched the whole thing & didn't find a maxlen free extent.
 	 */
 	if (minlen < maxlen && besti != -1) {
-		xfs_extlen_t	p;	/* amount to trim length by */
+		xfs_rtxlen_t	p;	/* amount to trim length by */
 
 		/*
 		 * If size should be a multiple of prod, make that so.
@@ -360,16 +360,16 @@ xfs_rtallocate_extent_exact(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_trans_t	*tp,		/* transaction pointer */
 	xfs_rtblock_t	bno,		/* starting block number to allocate */
-	xfs_extlen_t	minlen,		/* minimum length to allocate */
-	xfs_extlen_t	maxlen,		/* maximum length to allocate */
-	xfs_extlen_t	*len,		/* out: actual length allocated */
+	xfs_rtxlen_t	minlen,		/* minimum length to allocate */
+	xfs_rtxlen_t	maxlen,		/* maximum length to allocate */
+	xfs_rtxlen_t	*len,		/* out: actual length allocated */
 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
-	xfs_extlen_t	prod,		/* extent product factor */
+	xfs_rtxlen_t	prod,		/* extent product factor */
 	xfs_rtblock_t	*rtblock)	/* out: start block allocated */
 {
 	int		error;		/* error value */
-	xfs_extlen_t	i;		/* extent length trimmed due to prod */
+	xfs_rtxlen_t	i;		/* extent length trimmed due to prod */
 	int		isfree;		/* extent is free */
 	xfs_rtblock_t	next;		/* next block to try (dummy) */
 
@@ -440,12 +440,12 @@ xfs_rtallocate_extent_near(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_trans_t	*tp,		/* transaction pointer */
 	xfs_rtblock_t	bno,		/* starting block number to allocate */
-	xfs_extlen_t	minlen,		/* minimum length to allocate */
-	xfs_extlen_t	maxlen,		/* maximum length to allocate */
-	xfs_extlen_t	*len,		/* out: actual length allocated */
+	xfs_rtxlen_t	minlen,		/* minimum length to allocate */
+	xfs_rtxlen_t	maxlen,		/* maximum length to allocate */
+	xfs_rtxlen_t	*len,		/* out: actual length allocated */
 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
-	xfs_extlen_t	prod,		/* extent product factor */
+	xfs_rtxlen_t	prod,		/* extent product factor */
 	xfs_rtblock_t	*rtblock)	/* out: start block allocated */
 {
 	int		any;		/* any useful extents from summary */
@@ -644,12 +644,12 @@ STATIC int				/* error */
 xfs_rtallocate_extent_size(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_trans_t	*tp,		/* transaction pointer */
-	xfs_extlen_t	minlen,		/* minimum length to allocate */
-	xfs_extlen_t	maxlen,		/* maximum length to allocate */
-	xfs_extlen_t	*len,		/* out: actual length allocated */
+	xfs_rtxlen_t	minlen,		/* minimum length to allocate */
+	xfs_rtxlen_t	maxlen,		/* maximum length to allocate */
+	xfs_rtxlen_t	*len,		/* out: actual length allocated */
 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
-	xfs_extlen_t	prod,		/* extent product factor */
+	xfs_rtxlen_t	prod,		/* extent product factor */
 	xfs_rtblock_t	*rtblock)	/* out: start block allocated */
 {
 	int		error;		/* error value */
@@ -1197,11 +1197,11 @@ int					/* error */
 xfs_rtallocate_extent(
 	xfs_trans_t	*tp,		/* transaction pointer */
 	xfs_rtblock_t	bno,		/* starting block number to allocate */
-	xfs_extlen_t	minlen,		/* minimum length to allocate */
-	xfs_extlen_t	maxlen,		/* maximum length to allocate */
-	xfs_extlen_t	*len,		/* out: actual length allocated */
+	xfs_rtxlen_t	minlen,		/* minimum length to allocate */
+	xfs_rtxlen_t	maxlen,		/* maximum length to allocate */
+	xfs_rtxlen_t	*len,		/* out: actual length allocated */
 	int		wasdel,		/* was a delayed allocation extent */
-	xfs_extlen_t	prod,		/* extent product factor */
+	xfs_rtxlen_t	prod,		/* extent product factor */
 	xfs_rtblock_t	*rtblock)	/* out: start block allocated */
 {
 	xfs_mount_t	*mp = tp->t_mountp;
@@ -1217,7 +1217,7 @@ xfs_rtallocate_extent(
 	 * If prod is set then figure out what to do to minlen and maxlen.
 	 */
 	if (prod > 1) {
-		xfs_extlen_t	i;
+		xfs_rtxlen_t	i;
 
 		if ((i = maxlen % prod))
 			maxlen -= i;
@@ -1444,7 +1444,7 @@ int					/* error */
 xfs_rtpick_extent(
 	xfs_mount_t	*mp,		/* file system mount point */
 	xfs_trans_t	*tp,		/* transaction pointer */
-	xfs_extlen_t	len,		/* allocation length (rtextents) */
+	xfs_rtxlen_t	len,		/* allocation length (rtextents) */
 	xfs_rtblock_t	*pick)		/* result rt extent */
 {
 	xfs_rtblock_t	b;		/* result block */