xfs: inobt can use perags in many more places than it does

Lots of code in the inobt infrastructure is passed both xfs_mount
and perags. We only need perags for the per-ag inode allocation
code, so reduce the duplication by passing only the perags as the
primary object.

This ends up reducing the code size by a bit:

	   text    data     bss     dec     hex filename
orig	1138878  323979     548 1463405  16546d (TOTALS)
patched	1138709  323979     548 1463236  1653c4 (TOTALS)

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

1 files changed, 12 insertions, 13 deletions

diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 53d6b7766609..c8b31c06a95d 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -176,13 +176,12 @@ xfs_inobt_insert(
 	xfs_agino_t		newlen,
 	xfs_btnum_t		btnum)
 {
-	struct xfs_mount	*mp = pag->pag_mount;
 	struct xfs_btree_cur	*cur;
 	xfs_agino_t		thisino;
 	int			i;
 	int			error;
 
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, btnum);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, btnum);
 
 	for (thisino = newino;
 	     thisino < newino + newlen;
@@ -527,7 +526,7 @@ xfs_inobt_insert_sprec(
 	int				i;
 	struct xfs_inobt_rec_incore	rec;
 
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, btnum);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, btnum);
 
 	/* the new record is pre-aligned so we know where to look */
 	error = xfs_inobt_lookup(cur, nrec->ir_startino, XFS_LOOKUP_EQ, &i);
@@ -1004,7 +1003,7 @@ xfs_dialloc_ag_inobt(
 	ASSERT(pag->pagi_freecount > 0);
 
  restart_pagno:
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_INO);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, XFS_BTNUM_INO);
 	/*
 	 * If pagino is 0 (this is the root inode allocation) use newino.
 	 * This must work because we've just allocated some.
@@ -1457,7 +1456,7 @@ xfs_dialloc_ag(
 	if (!pagino)
 		pagino = be32_to_cpu(agi->agi_newino);
 
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_FINO);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, XFS_BTNUM_FINO);
 
 	error = xfs_check_agi_freecount(cur);
 	if (error)
@@ -1500,7 +1499,7 @@ xfs_dialloc_ag(
 	 * the original freecount. If all is well, make the equivalent update to
 	 * the inobt using the finobt record and offset information.
 	 */
-	icur = xfs_inobt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_INO);
+	icur = xfs_inobt_init_cursor(pag, tp, agbp, XFS_BTNUM_INO);
 
 	error = xfs_check_agi_freecount(icur);
 	if (error)
@@ -1926,7 +1925,7 @@ xfs_difree_inobt(
 	/*
 	 * Initialize the cursor.
 	 */
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_INO);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, XFS_BTNUM_INO);
 
 	error = xfs_check_agi_freecount(cur);
 	if (error)
@@ -2051,7 +2050,7 @@ xfs_difree_finobt(
 	int				error;
 	int				i;
 
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_FINO);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, XFS_BTNUM_FINO);
 
 	error = xfs_inobt_lookup(cur, ibtrec->ir_startino, XFS_LOOKUP_EQ, &i);
 	if (error)
@@ -2248,7 +2247,7 @@ xfs_imap_lookup(
 	 * we have a record, we need to ensure it contains the inode number
 	 * we are looking up.
 	 */
-	cur = xfs_inobt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_INO);
+	cur = xfs_inobt_init_cursor(pag, tp, agbp, XFS_BTNUM_INO);
 	error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE, &i);
 	if (!error) {
 		if (i)
@@ -2937,17 +2936,17 @@ xfs_ialloc_check_shrink(
 {
 	struct xfs_inobt_rec_incore rec;
 	struct xfs_btree_cur	*cur;
-	struct xfs_mount	*mp = tp->t_mountp;
-	xfs_agino_t		agino = XFS_AGB_TO_AGINO(mp, new_length);
+	xfs_agino_t		agino;
 	int			has;
 	int			error;
 
-	if (!xfs_has_sparseinodes(mp))
+	if (!xfs_has_sparseinodes(pag->pag_mount))
 		return 0;
 
-	cur = xfs_inobt_init_cursor(mp, tp, agibp, pag, XFS_BTNUM_INO);
+	cur = xfs_inobt_init_cursor(pag, tp, agibp, XFS_BTNUM_INO);
 
 	/* Look up the inobt record that would correspond to the new EOFS. */
+	agino = XFS_AGB_TO_AGINO(pag->pag_mount, new_length);
 	error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE, &has);
 	if (error || !has)
 		goto out;