[PATCH 2/4] xfs: Convert xfs_attr_sf macros to inline functions

Carlos Maiolino
2020-08-31T13:04:45Z

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@redhat.com>
---
fs/xfs/libxfs/xfs_attr.c | 15 ++++++++++++---
fs/xfs/libxfs/xfs_attr_leaf.c | 16 ++++++++--------
fs/xfs/libxfs/xfs_attr_sf.h | 23 ++++++++++++++---------
fs/xfs/xfs_attr_list.c | 4 ++--
4 files changed, 36 insertions(+), 22 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 2e055c079f397..2b48fdb394e80 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 +523,15 @@ xfs_attr_set(
* External routines when attribute list is inside the inode
*========================================================================*/

+static inline int xfs_attr_sf_totsize(struct xfs_inode *dp) {
+
+ xfs_attr_shortform_t *sf =
+ (xfs_attr_shortform_t *)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 +564,8 @@ 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 7bbc97e0e4d4a..a8a4e21d19726 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 = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
sfe = (xfs_attr_sf_entry_t *)((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 = (xfs_attr_shortform_t *)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 = (xfs_attr_shortform_t *)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;
@@ -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 d93012a0be4d0..48906c5196505 100644
--- a/fs/xfs/libxfs/xfs_attr_sf.h
+++ b/fs/xfs/libxfs/xfs_attr_sf.h
@@ -27,16 +27,21 @@ 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 */ \
- (((int)sizeof(xfs_attr_sf_entry_t) + (nlen)+(vlen)))
#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \
(1 << (NBBY*(int)sizeof(uint8_t)))
-#define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \
- ((int)sizeof(xfs_attr_sf_entry_t) + (sfep)->namelen+(sfep)->valuelen)
-#define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \
- ((xfs_attr_sf_entry_t *)((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep)))
-#define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \
- (be16_to_cpu(((xfs_attr_shortform_t *) \
- ((dp)->i_afp->if_u1.if_data))->hdr.totsize))

+static inline int xfs_attr_sf_entsize_byname(uint8_t nlen, uint8_t vlen) {
+ return sizeof(xfs_attr_sf_entry_t) + nlen + vlen;
+}
+
+/* space an entry uses */
+static inline int xfs_attr_sf_entsize(xfs_attr_sf_entry_t *sfep) {
+ return sizeof(xfs_attr_sf_entry_t) + sfep->namelen + sfep->valuelen;
+}
+
+static inline xfs_attr_sf_entry_t *
+xfs_attr_sf_nextentry(xfs_attr_sf_entry_t *sfep) {
+ return (xfs_attr_sf_entry_t *)((char *)(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 50f922cad91a4..fbe5574f08930 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