From: Dave Chinner <dchinner@redhat.com>
Date: Thu, 6 Mar 2014 23:25:41 +0000 (+1100)
Subject: libxfs: add helper for updating checksums on xfs_bufs
X-Git-Tag: v3.2.0-rc1~31
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=43b5aeed445c3505d16bc83693daecd2c8dcc059;p=thirdparty%2Fxfsprogs-dev.git

libxfs: add helper for updating checksums on xfs_bufs

[userspace port]

Many/most callers of xfs_update_cksum() pass bp->b_addr and
BBTOB(bp->b_length) as the first 2 args.  Add a helper
which can just accept the bp and the crc offset, and work
it out on its own, for brevity.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---

diff --git a/include/libxfs.h b/include/libxfs.h
index 610e7d555..750090372 100644
--- a/include/libxfs.h
+++ b/include/libxfs.h
@@ -786,6 +786,13 @@ xfs_buf_verify_cksum(struct xfs_buf *bp, unsigned long cksum_offset)
 				cksum_offset);
 }
 
+static inline void
+xfs_buf_update_cksum(struct xfs_buf *bp, unsigned long cksum_offset)
+{
+	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
+			 cksum_offset);
+}
+
 #define xfs_notice(mp,fmt,args...)		cmn_err(CE_NOTE,fmt, ## args)
 #define xfs_warn(mp,fmt,args...)		cmn_err(CE_WARN,fmt, ## args)
 #define xfs_alert(mp,fmt,args...)		cmn_err(CE_ALERT,fmt, ## args)
diff --git a/libxfs/xfs_alloc.c b/libxfs/xfs_alloc.c
index 2f6a2417c..dca612bc2 100644
--- a/libxfs/xfs_alloc.c
+++ b/libxfs/xfs_alloc.c
@@ -493,7 +493,7 @@ xfs_agfl_write_verify(
 	if (bip)
 		XFS_BUF_TO_AGFL(bp)->agfl_lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_AGFL_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_AGFL_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_agfl_buf_ops = {
@@ -2249,7 +2249,7 @@ xfs_agf_write_verify(
 	if (bip)
 		XFS_BUF_TO_AGF(bp)->agf_lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_AGF_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_AGF_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_agf_buf_ops = {
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index 0bd316903..90937d6f2 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -198,7 +198,7 @@ xfs_attr3_leaf_write_verify(
 	if (bip)
 		hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_ATTR3_LEAF_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_ATTR3_LEAF_CRC_OFF);
 }
 
 /*
diff --git a/libxfs/xfs_btree.c b/libxfs/xfs_btree.c
index fffed0a25..9be4abd84 100644
--- a/libxfs/xfs_btree.c
+++ b/libxfs/xfs_btree.c
@@ -218,8 +218,7 @@ xfs_btree_lblock_calc_crc(
 		return;
 	if (bip)
 		block->bb_u.l.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
-			 XFS_BTREE_LBLOCK_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_BTREE_LBLOCK_CRC_OFF);
 }
 
 bool
@@ -251,8 +250,7 @@ xfs_btree_sblock_calc_crc(
 		return;
 	if (bip)
 		block->bb_u.s.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
-			 XFS_BTREE_SBLOCK_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_BTREE_SBLOCK_CRC_OFF);
 }
 
 bool
diff --git a/libxfs/xfs_da_btree.c b/libxfs/xfs_da_btree.c
index 4e8b41a32..0c0c5e0b9 100644
--- a/libxfs/xfs_da_btree.c
+++ b/libxfs/xfs_da_btree.c
@@ -220,7 +220,7 @@ xfs_da3_node_write_verify(
 	if (bip)
 		hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DA3_NODE_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_DA3_NODE_CRC_OFF);
 }
 
 /*
diff --git a/libxfs/xfs_dir2_block.c b/libxfs/xfs_dir2_block.c
index 13561c32d..3fe10ea9b 100644
--- a/libxfs/xfs_dir2_block.c
+++ b/libxfs/xfs_dir2_block.c
@@ -98,7 +98,7 @@ xfs_dir3_block_write_verify(
 	if (bip)
 		hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_DATA_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_DIR3_DATA_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_dir3_block_buf_ops = {
diff --git a/libxfs/xfs_dir2_data.c b/libxfs/xfs_dir2_data.c
index 2a0de280e..bcb4c7f1d 100644
--- a/libxfs/xfs_dir2_data.c
+++ b/libxfs/xfs_dir2_data.c
@@ -262,7 +262,7 @@ xfs_dir3_data_write_verify(
 	if (bip)
 		hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_DATA_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_DIR3_DATA_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_dir3_data_buf_ops = {
diff --git a/libxfs/xfs_dir2_leaf.c b/libxfs/xfs_dir2_leaf.c
index 0fa147f6e..710f005ee 100644
--- a/libxfs/xfs_dir2_leaf.c
+++ b/libxfs/xfs_dir2_leaf.c
@@ -235,7 +235,7 @@ __write_verify(
 	if (bip)
 		hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_LEAF_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_DIR3_LEAF_CRC_OFF);
 }
 
 static void
diff --git a/libxfs/xfs_dir2_node.c b/libxfs/xfs_dir2_node.c
index 78c77ede6..f4260ea9f 100644
--- a/libxfs/xfs_dir2_node.c
+++ b/libxfs/xfs_dir2_node.c
@@ -126,7 +126,7 @@ xfs_dir3_free_write_verify(
 	if (bip)
 		hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_FREE_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_DIR3_FREE_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_dir3_free_buf_ops = {
diff --git a/libxfs/xfs_ialloc.c b/libxfs/xfs_ialloc.c
index 21683b5fb..b1382d6ee 100644
--- a/libxfs/xfs_ialloc.c
+++ b/libxfs/xfs_ialloc.c
@@ -1583,7 +1583,7 @@ xfs_agi_write_verify(
 
 	if (bip)
 		XFS_BUF_TO_AGI(bp)->agi_lsn = cpu_to_be64(bip->bli_item.li_lsn);
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_AGI_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_AGI_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_agi_buf_ops = {
diff --git a/libxfs/xfs_sb.c b/libxfs/xfs_sb.c
index 43fdb5983..db267c227 100644
--- a/libxfs/xfs_sb.c
+++ b/libxfs/xfs_sb.c
@@ -628,7 +628,7 @@ xfs_sb_write_verify(
 	if (bip)
 		XFS_BUF_TO_SBP(bp)->sb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_SB_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_SB_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_sb_buf_ops = {
diff --git a/libxfs/xfs_symlink_remote.c b/libxfs/xfs_symlink_remote.c
index 716f8a39f..b59bf146c 100644
--- a/libxfs/xfs_symlink_remote.c
+++ b/libxfs/xfs_symlink_remote.c
@@ -144,7 +144,7 @@ xfs_symlink_write_verify(
 		struct xfs_dsymlink_hdr *dsl = bp->b_addr;
 		dsl->sl_lsn = cpu_to_be64(bip->bli_item.li_lsn);
 	}
-	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_SYMLINK_CRC_OFF);
+	xfs_buf_update_cksum(bp, XFS_SYMLINK_CRC_OFF);
 }
 
 const struct xfs_buf_ops xfs_symlink_buf_ops = {