[PATCH v3 4/4] xfs: Convert xfs_attr_sf macros to inline functions

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xfs_attr_sf_totsize() requires access to xfs_inode structure, so, once
xfs_attr_shortform_addname() is its only user, move it to xfs_attr.c
instead of playing with more #includes.

Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---

Changelog:
	V2:
	 - keep macro comments above inline functions
	V3:
	- Add extra spacing in xfs_attr_sf_totsize()
	- Fix open curling braces on inline functions
	- use void * casting on xfs_attr_sf_nextentry()

 fs/xfs/libxfs/xfs_attr.c      | 14 +++++++++++---
 fs/xfs/libxfs/xfs_attr_leaf.c | 18 +++++++++---------
 fs/xfs/libxfs/xfs_attr_sf.h   | 30 +++++++++++++++++++-----------
 fs/xfs/xfs_attr_list.c        |  4 ++--
 4 files changed, 41 insertions(+), 25 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 2e055c079f397..982014499f1ff 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -428,7 +428,7 @@ xfs_attr_set(
 		 */
 		if (XFS_IFORK_Q(dp) == 0) {
 			int sf_size = sizeof(struct xfs_attr_sf_hdr) +
-				XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen,
+				xfs_attr_sf_entsize_byname(args->namelen,
 						args->valuelen);
 
 			error = xfs_bmap_add_attrfork(dp, sf_size, rsvd);
@@ -523,6 +523,14 @@ xfs_attr_set(
  * External routines when attribute list is inside the inode
  *========================================================================*/
 
+/* total space in use */
+static inline int xfs_attr_sf_totsize(struct xfs_inode *dp) {
+	struct xfs_attr_shortform *sf =
+		(struct xfs_attr_shortform *)dp->i_afp->if_u1.if_data;
+
+	return be16_to_cpu(sf->hdr.totsize);
+}
+
 /*
  * Add a name to the shortform attribute list structure
  * This is the external routine.
@@ -555,8 +563,8 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
 	    args->valuelen >= XFS_ATTR_SF_ENTSIZE_MAX)
 		return -ENOSPC;
 
-	newsize = XFS_ATTR_SF_TOTSIZE(args->dp);
-	newsize += XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
+	newsize = xfs_attr_sf_totsize(args->dp);
+	newsize += xfs_attr_sf_entsize_byname(args->namelen, args->valuelen);
 
 	forkoff = xfs_attr_shortform_bytesfit(args->dp, newsize);
 	if (!forkoff)
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index fb05c77fc8c9f..05d1f221d4119 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -684,9 +684,9 @@ xfs_attr_sf_findname(
 	sf = (struct xfs_attr_shortform *)args->dp->i_afp->if_u1.if_data;
 	sfe = &sf->list[0];
 	end = sf->hdr.count;
-	for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
+	for (i = 0; i < end; sfe = xfs_attr_sf_nextentry(sfe),
 			     base += size, i++) {
-		size = XFS_ATTR_SF_ENTSIZE(sfe);
+		size = xfs_attr_sf_entsize(sfe);
 		if (!xfs_attr_match(args, sfe->namelen, sfe->nameval,
 				    sfe->flags))
 			continue;
@@ -733,7 +733,7 @@ xfs_attr_shortform_add(
 		ASSERT(0);
 
 	offset = (char *)sfe - (char *)sf;
-	size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
+	size = xfs_attr_sf_entsize_byname(args->namelen, args->valuelen);
 	xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
 	sf = (struct xfs_attr_shortform *)ifp->if_u1.if_data;
 	sfe = (struct xfs_attr_sf_entry *)((char *)sf + offset);
@@ -792,7 +792,7 @@ xfs_attr_shortform_remove(
 	error = xfs_attr_sf_findname(args, &sfe, &base);
 	if (error != -EEXIST)
 		return error;
-	size = XFS_ATTR_SF_ENTSIZE(sfe);
+	size = xfs_attr_sf_entsize(sfe);
 
 	/*
 	 * Fix up the attribute fork data, covering the hole
@@ -849,7 +849,7 @@ xfs_attr_shortform_lookup(xfs_da_args_t *args)
 	sf = (struct xfs_attr_shortform *)ifp->if_u1.if_data;
 	sfe = &sf->list[0];
 	for (i = 0; i < sf->hdr.count;
-				sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
+				sfe = xfs_attr_sf_nextentry(sfe), i++) {
 		if (xfs_attr_match(args, sfe->namelen, sfe->nameval,
 				sfe->flags))
 			return -EEXIST;
@@ -876,7 +876,7 @@ xfs_attr_shortform_getvalue(
 	sf = (struct xfs_attr_shortform *)args->dp->i_afp->if_u1.if_data;
 	sfe = &sf->list[0];
 	for (i = 0; i < sf->hdr.count;
-				sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
+				sfe = xfs_attr_sf_nextentry(sfe), i++) {
 		if (xfs_attr_match(args, sfe->namelen, sfe->nameval,
 				sfe->flags))
 			return xfs_attr_copy_value(args,
@@ -951,7 +951,7 @@ xfs_attr_shortform_to_leaf(
 		ASSERT(error != -ENOSPC);
 		if (error)
 			goto out;
-		sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
+		sfe = xfs_attr_sf_nextentry(sfe);
 	}
 	error = 0;
 	*leaf_bp = bp;
@@ -992,7 +992,7 @@ xfs_attr_shortform_allfit(
 			return 0;
 		if (be16_to_cpu(name_loc->valuelen) >= XFS_ATTR_SF_ENTSIZE_MAX)
 			return 0;
-		bytes += XFS_ATTR_SF_ENTSIZE_BYNAME(
+		bytes += xfs_attr_sf_entsize_byname(
 					name_loc->namelen,
 					be16_to_cpu(name_loc->valuelen));
 	}
@@ -1049,7 +1049,7 @@ xfs_attr_shortform_verify(
 		 * within the data buffer.  The next entry starts after the
 		 * name component, so nextentry is an acceptable test.
 		 */
-		next_sfep = XFS_ATTR_SF_NEXTENTRY(sfep);
+		next_sfep = xfs_attr_sf_nextentry(sfep);
 		if ((char *)next_sfep > endp)
 			return __this_address;
 
diff --git a/fs/xfs/libxfs/xfs_attr_sf.h b/fs/xfs/libxfs/xfs_attr_sf.h
index 29934103ce559..cb0b4801b7c7a 100644
--- a/fs/xfs/libxfs/xfs_attr_sf.h
+++ b/fs/xfs/libxfs/xfs_attr_sf.h
@@ -26,18 +26,26 @@ typedef struct xfs_attr_sf_sort {
 	unsigned char	*name;		/* name value, pointer into buffer */
 } xfs_attr_sf_sort_t;
 
-#define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen)	/* space name/value uses */ \
-	((sizeof(struct xfs_attr_sf_entry) + (nlen) + (vlen)))
 #define XFS_ATTR_SF_ENTSIZE_MAX			/* max space for name&value */ \
 	((1 << (NBBY*(int)sizeof(uint8_t))) - 1)
-#define XFS_ATTR_SF_ENTSIZE(sfep)		/* space an entry uses */ \
-	((int)sizeof(struct xfs_attr_sf_entry) + \
-		(sfep)->namelen+(sfep)->valuelen)
-#define XFS_ATTR_SF_NEXTENTRY(sfep)		/* next entry in struct */ \
-	((struct xfs_attr_sf_entry *)((char *)(sfep) + \
-		XFS_ATTR_SF_ENTSIZE(sfep)))
-#define XFS_ATTR_SF_TOTSIZE(dp)			/* total space in use */ \
-	(be16_to_cpu(((struct xfs_attr_shortform *)	\
-		((dp)->i_afp->if_u1.if_data))->hdr.totsize))
+
+/* space name/value uses */
+static inline int xfs_attr_sf_entsize_byname(uint8_t nlen, uint8_t vlen)
+{
+	return sizeof(struct xfs_attr_sf_entry) + nlen + vlen;
+}
+
+/* space an entry uses */
+static inline int xfs_attr_sf_entsize(struct xfs_attr_sf_entry *sfep)
+{
+	return struct_size(sfep, nameval, sfep->namelen + sfep->valuelen);
+}
+
+/* next entry in struct */
+static inline struct xfs_attr_sf_entry *
+xfs_attr_sf_nextentry(struct xfs_attr_sf_entry *sfep)
+{
+	return (void *)(sfep) + xfs_attr_sf_entsize(sfep);
+}
 
 #endif	/* __XFS_ATTR_SF_H__ */
diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c
index 4eb1d6faecfb2..8f8837fe21cf0 100644
--- a/fs/xfs/xfs_attr_list.c
+++ b/fs/xfs/xfs_attr_list.c
@@ -96,7 +96,7 @@ xfs_attr_shortform_list(
 			 */
 			if (context->seen_enough)
 				break;
-			sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
+			sfe = xfs_attr_sf_nextentry(sfe);
 		}
 		trace_xfs_attr_list_sf_all(context);
 		return 0;
@@ -136,7 +136,7 @@ xfs_attr_shortform_list(
 		/* These are bytes, and both on-disk, don't endian-flip */
 		sbp->valuelen = sfe->valuelen;
 		sbp->flags = sfe->flags;
-		sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
+		sfe = xfs_attr_sf_nextentry(sfe);
 		sbp++;
 		nsbuf++;
 	}
-- 
2.26.2
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