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From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Cc: "Darrick J . Wong" <djwong@kernel.org>
Subject: [PATCH 01/20] xfs: split xfs_imap_to_bp
Date: Mon, 29 Mar 2021 07:38:10 +0200	[thread overview]
Message-ID: <20210329053829.1851318-2-hch@lst.de> (raw)
In-Reply-To: <20210329053829.1851318-1-hch@lst.de>

Split looking up the dinode from xfs_imap_to_bp, which can be
significantly simplified as a result.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/libxfs/xfs_inode_buf.c   | 27 ++++-----------------------
 fs/xfs/libxfs/xfs_inode_buf.h   |  5 ++---
 fs/xfs/libxfs/xfs_trans_inode.c |  3 +--
 fs/xfs/scrub/ialloc.c           |  3 +--
 fs/xfs/xfs_icache.c             |  6 +++---
 fs/xfs/xfs_inode.c              |  6 ++++--
 fs/xfs/xfs_log_recover.c        |  3 ++-
 7 files changed, 17 insertions(+), 36 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
index 4d7410e49db41b..af5ee8bd7e6ac9 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.c
+++ b/fs/xfs/libxfs/xfs_inode_buf.c
@@ -124,37 +124,18 @@ const struct xfs_buf_ops xfs_inode_buf_ra_ops = {
 /*
  * This routine is called to map an inode to the buffer containing the on-disk
  * version of the inode.  It returns a pointer to the buffer containing the
- * on-disk inode in the bpp parameter, and in the dipp parameter it returns a
- * pointer to the on-disk inode within that buffer.
- *
- * If a non-zero error is returned, then the contents of bpp and dipp are
- * undefined.
+ * on-disk inode in the bpp parameter.
  */
 int
 xfs_imap_to_bp(
 	struct xfs_mount	*mp,
 	struct xfs_trans	*tp,
 	struct xfs_imap		*imap,
-	struct xfs_dinode       **dipp,
-	struct xfs_buf		**bpp,
-	uint			buf_flags)
+	struct xfs_buf		**bpp)
 {
-	struct xfs_buf		*bp;
-	int			error;
-
-	buf_flags |= XBF_UNMAPPED;
-	error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno,
-				   (int)imap->im_len, buf_flags, &bp,
+	return xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno,
+				   imap->im_len, XBF_UNMAPPED, bpp,
 				   &xfs_inode_buf_ops);
-	if (error) {
-		ASSERT(error != -EAGAIN || (buf_flags & XBF_TRYLOCK));
-		return error;
-	}
-
-	*bpp = bp;
-	if (dipp)
-		*dipp = xfs_buf_offset(bp, imap->im_boffset);
-	return 0;
 }
 
 static inline struct timespec64 xfs_inode_decode_bigtime(uint64_t ts)
diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h
index ef5eaf33d146ff..9e1ae38380b3c0 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.h
+++ b/fs/xfs/libxfs/xfs_inode_buf.h
@@ -47,9 +47,8 @@ struct xfs_imap {
 	unsigned short	im_boffset;	/* inode offset in block in bytes */
 };
 
-int	xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *,
-		       struct xfs_imap *, struct xfs_dinode **,
-		       struct xfs_buf **, uint);
+int	xfs_imap_to_bp(struct xfs_mount *mp, struct xfs_trans *tp,
+		       struct xfs_imap *imap, struct xfs_buf **bpp);
 void	xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *);
 void	xfs_inode_to_disk(struct xfs_inode *ip, struct xfs_dinode *to,
 			  xfs_lsn_t lsn);
diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inode.c
index 90f1d564505270..4f02cb439ab57e 100644
--- a/fs/xfs/libxfs/xfs_trans_inode.c
+++ b/fs/xfs/libxfs/xfs_trans_inode.c
@@ -164,8 +164,7 @@ xfs_trans_log_inode(
 		 * here.
 		 */
 		spin_unlock(&iip->ili_lock);
-		error = xfs_imap_to_bp(ip->i_mount, tp, &ip->i_imap, NULL,
-					&bp, 0);
+		error = xfs_imap_to_bp(ip->i_mount, tp, &ip->i_imap, &bp);
 		if (error) {
 			xfs_force_shutdown(ip->i_mount, SHUTDOWN_META_IO_ERROR);
 			return;
diff --git a/fs/xfs/scrub/ialloc.c b/fs/xfs/scrub/ialloc.c
index 6517d67e8d51f8..1644199c29a815 100644
--- a/fs/xfs/scrub/ialloc.c
+++ b/fs/xfs/scrub/ialloc.c
@@ -212,7 +212,6 @@ xchk_iallocbt_check_cluster(
 {
 	struct xfs_imap			imap;
 	struct xfs_mount		*mp = bs->cur->bc_mp;
-	struct xfs_dinode		*dip;
 	struct xfs_buf			*cluster_bp;
 	unsigned int			nr_inodes;
 	xfs_agnumber_t			agno = bs->cur->bc_ag.agno;
@@ -278,7 +277,7 @@ xchk_iallocbt_check_cluster(
 			&XFS_RMAP_OINFO_INODES);
 
 	/* Grab the inode cluster buffer. */
-	error = xfs_imap_to_bp(mp, bs->cur->bc_tp, &imap, &dip, &cluster_bp, 0);
+	error = xfs_imap_to_bp(mp, bs->cur->bc_tp, &imap, &cluster_bp);
 	if (!xchk_btree_xref_process_error(bs->sc, bs->cur, 0, &error))
 		return error;
 
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index e6a62f7654229c..248c42bf212d65 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -505,14 +505,14 @@ xfs_iget_cache_miss(
 	    (flags & XFS_IGET_CREATE) && !(mp->m_flags & XFS_MOUNT_IKEEP)) {
 		VFS_I(ip)->i_generation = prandom_u32();
 	} else {
-		struct xfs_dinode	*dip;
 		struct xfs_buf		*bp;
 
-		error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0);
+		error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp);
 		if (error)
 			goto out_destroy;
 
-		error = xfs_inode_from_disk(ip, dip);
+		error = xfs_inode_from_disk(ip,
+				xfs_buf_offset(bp, ip->i_imap.im_boffset));
 		if (!error)
 			xfs_buf_set_ref(bp, XFS_INO_REF);
 		xfs_trans_brelse(tp, bp);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index c09bb39baeea99..8983ef05dc66f7 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2075,9 +2075,10 @@ xfs_iunlink_update_inode(
 
 	ASSERT(xfs_verify_agino_or_null(mp, agno, next_agino));
 
-	error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &ibp, 0);
+	error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &ibp);
 	if (error)
 		return error;
+	dip = xfs_buf_offset(ibp, ip->i_imap.im_boffset);
 
 	/* Make sure the old pointer isn't garbage. */
 	old_value = be32_to_cpu(dip->di_next_unlinked);
@@ -2202,13 +2203,14 @@ xfs_iunlink_map_ino(
 		return error;
 	}
 
-	error = xfs_imap_to_bp(mp, tp, imap, dipp, bpp, 0);
+	error = xfs_imap_to_bp(mp, tp, imap, bpp);
 	if (error) {
 		xfs_warn(mp, "%s: xfs_imap_to_bp returned error %d.",
 				__func__, error);
 		return error;
 	}
 
+	*dipp = xfs_buf_offset(*bpp, imap->im_boffset);
 	return 0;
 }
 
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index ffa4f6f2f31e2a..42a8c7da492aa8 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -2683,9 +2683,10 @@ xlog_recover_process_one_iunlink(
 	/*
 	 * Get the on disk inode to find the next inode in the bucket.
 	 */
-	error = xfs_imap_to_bp(mp, NULL, &ip->i_imap, &dip, &ibp, 0);
+	error = xfs_imap_to_bp(mp, NULL, &ip->i_imap, &ibp);
 	if (error)
 		goto fail_iput;
+	dip = xfs_buf_offset(ibp, ip->i_imap.im_boffset);
 
 	xfs_iflags_clear(ip, XFS_IRECOVERY);
 	ASSERT(VFS_I(ip)->i_nlink == 0);
-- 
2.30.1


  reply	other threads:[~2021-03-29  5:56 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-29  5:38 xfs inode structure cleanups v4 Christoph Hellwig
2021-03-29  5:38 ` Christoph Hellwig [this message]
2021-03-29  5:38 ` [PATCH 02/20] xfs: consistently initialize di_flags2 Christoph Hellwig
2021-03-29  5:38 ` [PATCH 03/20] xfs: handle crtime more carefully in xfs_bulkstat_one_int Christoph Hellwig
2021-03-29  5:38 ` [PATCH 04/20] xfs: remove the unused xfs_icdinode_has_bigtime helper Christoph Hellwig
2021-03-29  5:38 ` [PATCH 05/20] xfs: remove the di_dmevmask and di_dmstate fields from struct xfs_icdinode Christoph Hellwig
2021-03-30 15:28   ` Darrick J. Wong
2021-03-30 17:33     ` Christoph Hellwig
2021-03-29  5:38 ` [PATCH 06/20] xfs: don't clear the "dinode core" in xfs_inode_alloc Christoph Hellwig
2021-03-29  5:38 ` [PATCH 07/20] xfs: move the di_projid field to struct xfs_inode Christoph Hellwig
2021-03-30 15:20   ` Darrick J. Wong
2021-03-29  5:38 ` [PATCH 08/20] xfs: move the di_size " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 09/20] xfs: move the di_nblocks " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 10/20] xfs: move the di_extsize " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 11/20] xfs: move the di_cowextsize " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 12/20] xfs: move the di_flushiter " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 13/20] xfs: cleanup xfs_fill_fsxattr Christoph Hellwig
2021-03-29  5:38 ` [PATCH 14/20] xfs: use XFS_B_TO_FSB in xfs_ioctl_setattr Christoph Hellwig
2021-03-30 15:20   ` Darrick J. Wong
2021-03-29  5:38 ` [PATCH 15/20] xfs: use a union for i_cowextsize and i_flushiter Christoph Hellwig
2021-03-30 15:22   ` Darrick J. Wong
2021-03-29  5:38 ` [PATCH 16/20] xfs: move the di_forkoff field to struct xfs_inode Christoph Hellwig
2021-03-29  5:38 ` [PATCH 17/20] xfs: move the di_flags " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 18/20] xfs: move the di_flags2 " Christoph Hellwig
2021-03-29 18:14   ` Darrick J. Wong
2021-03-29  5:38 ` [PATCH 19/20] xfs: move the di_crtime " Christoph Hellwig
2021-03-29  5:38 ` [PATCH 20/20] xfs: merge _xfs_dic2xflags into xfs_ip2xflags Christoph Hellwig
2021-03-30 15:25   ` Darrick J. Wong
2021-03-30 17:31     ` Christoph Hellwig
2021-03-30 18:06       ` Darrick J. Wong

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