[PATCH] Rename FIELD_SIZEOF to MEMBER_SIZE and use in source tree.

[PATCH] Rename FIELD_SIZEOF to MEMBER_SIZE and use in source tree.

[Robert P. J. Day]

  Rename the macro FIELD_SIZEOF() in include/linux/kernel.h to
MEMBER_SIZE(), and make a number of replacements in the source tree
where that macro simplified the code.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>

---

  here's a reworked patch that uses a more reasonable name for that
macro, if the earlier patch isn't already in the system.  if someone
wants to tweak this further, feel free.


 arch/m68k/kernel/signal.c               |   30 +++++++++++-----------
 arch/um/drivers/net_kern.c              |    2 -
 drivers/block/viodasd.c                 |    2 -
 drivers/net/e1000/e1000_ethtool.c       |    2 -
 drivers/net/ixgb/ixgb_ethtool.c         |    2 -
 drivers/net/mv643xx_eth.c               |    2 -
 drivers/net/netxen/netxen_nic_ethtool.c |    2 -
 drivers/usb/atm/usbatm.c                |    2 -
 drivers/usb/net/cdc_ether.c             |    2 -
 drivers/usb/net/usbnet.c                |    2 -
 drivers/usb/serial/io_usbvend.h         |    8 ++---
 fs/ext2/xattr.c                         |    2 -
 fs/ext3/xattr.c                         |    2 -
 fs/ext4/xattr.c                         |    2 -
 fs/mbcache.c                            |    2 -
 include/acpi/actbl.h                    |    2 -
 include/asm-powerpc/fs_pd.h             |    2 -
 include/linux/kernel.h                  |    2 -
 include/net/sctp/sctp.h                 |    2 -
 19 files changed, 36 insertions(+), 36 deletions(-)


diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index f9af893..f386368 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -54,21 +54,21 @@
 asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs);

 const int frame_extra_sizes[16] = {
-  [1]	= -1, /* sizeof(((struct frame *)0)->un.fmt1), */
-  [2]	= sizeof(((struct frame *)0)->un.fmt2),
-  [3]	= sizeof(((struct frame *)0)->un.fmt3),
-  [4]	= sizeof(((struct frame *)0)->un.fmt4),
-  [5]	= -1, /* sizeof(((struct frame *)0)->un.fmt5), */
-  [6]	= -1, /* sizeof(((struct frame *)0)->un.fmt6), */
-  [7]	= sizeof(((struct frame *)0)->un.fmt7),
-  [8]	= -1, /* sizeof(((struct frame *)0)->un.fmt8), */
-  [9]	= sizeof(((struct frame *)0)->un.fmt9),
-  [10]	= sizeof(((struct frame *)0)->un.fmta),
-  [11]	= sizeof(((struct frame *)0)->un.fmtb),
-  [12]	= -1, /* sizeof(((struct frame *)0)->un.fmtc), */
-  [13]	= -1, /* sizeof(((struct frame *)0)->un.fmtd), */
-  [14]	= -1, /* sizeof(((struct frame *)0)->un.fmte), */
-  [15]	= -1, /* sizeof(((struct frame *)0)->un.fmtf), */
+  [1]	= -1, /* MEMBER_SIZE(struct frame, un.fmt1), */
+  [2]	= MEMBER_SIZE(struct frame, un.fmt2),
+  [3]	= MEMBER_SIZE(struct frame, un.fmt3),
+  [4]	= MEMBER_SIZE(struct frame, un.fmt4),
+  [5]	= -1, /* MEMBER_SIZE(struct frame, un.fmt5), */
+  [6]	= -1, /* MEMBER_SIZE(struct frame, un.fmt6), */
+  [7]	= MEMBER_SIZE(struct frame, un.fmt7),
+  [8]	= -1, /* MEMBER_SIZE(struct frame, un.fmt8), */
+  [9]	= MEMBER_SIZE(struct frame, un.fmt9),
+  [10]	= MEMBER_SIZE(struct frame, un.fmta),
+  [11]	= MEMBER_SIZE(struct frame, un.fmtb),
+  [12]	= -1, /* MEMBER_SIZE(struct frame, un.fmtc), */
+  [13]	= -1, /* MEMBER_SIZE(struct frame, un.fmtd), */
+  [14]	= -1, /* MEMBER_SIZE(struct frame, un.fmte), */
+  [15]	= -1, /* MEMBER_SIZE(struct frame, un.fmtf), */
 };

 /*
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index afe3d42..564e538 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -334,7 +334,7 @@ static int eth_configure(int n, void *init, char *mac,
 	int save, err, size;

 	size = transport->private_size + sizeof(struct uml_net_private) +
-		sizeof(((struct uml_net_private *) 0)->user);
+		MEMBER_SIZE(struct uml_net_private, user);

 	device = kzalloc(sizeof(*device), GFP_KERNEL);
 	if (device == NULL) {
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c
index 68592c3..a644794 100644
--- a/drivers/block/viodasd.c
+++ b/drivers/block/viodasd.c
@@ -69,7 +69,7 @@ MODULE_LICENSE("GPL");
 enum {
 	PARTITION_SHIFT = 3,
 	MAX_DISKNO = HVMAXARCHITECTEDVIRTUALDISKS,
-	MAX_DISK_NAME = sizeof(((struct gendisk *)0)->disk_name)
+	MAX_DISK_NAME = MEMBER_SIZE(struct gendisk, disk_name)
 };

 static DEFINE_SPINLOCK(viodasd_spinlock);
diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index da459f7..d549f09 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -53,7 +53,7 @@ struct e1000_stats {
 	int stat_offset;
 };

-#define E1000_STAT(m) sizeof(((struct e1000_adapter *)0)->m), \
+#define E1000_STAT(m) MEMBER_SIZE(struct e1000_adapter, m), \
 		      offsetof(struct e1000_adapter, m)
 static const struct e1000_stats e1000_gstrings_stats[] = {
 	{ "rx_packets", E1000_STAT(stats.gprc) },
diff --git a/drivers/net/ixgb/ixgb_ethtool.c b/drivers/net/ixgb/ixgb_ethtool.c
index cd22523..bb07ebf 100644
--- a/drivers/net/ixgb/ixgb_ethtool.c
+++ b/drivers/net/ixgb/ixgb_ethtool.c
@@ -52,7 +52,7 @@ struct ixgb_stats {
 	int stat_offset;
 };

-#define IXGB_STAT(m) sizeof(((struct ixgb_adapter *)0)->m), \
+#define IXGB_STAT(m) MEMBER_SIZE(struct ixgb_adapter, m), \
 		      offsetof(struct ixgb_adapter, m)
 static struct ixgb_stats ixgb_gstrings_stats[] = {
 	{"rx_packets", IXGB_STAT(net_stats.rx_packets)},
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index c41ae42..5d46b4e 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -2652,7 +2652,7 @@ struct mv643xx_stats {
 	int stat_offset;
 };

-#define MV643XX_STAT(m) sizeof(((struct mv643xx_private *)0)->m), \
+#define MV643XX_STAT(m) MEMBER_SIZE(struct mv643xx_private, m), \
 					offsetof(struct mv643xx_private, m)

 static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index 2ab4885..17ea848 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -50,7 +50,7 @@ struct netxen_nic_stats {
 	int stat_offset;
 };

-#define NETXEN_NIC_STAT(m) sizeof(((struct netxen_port *)0)->m), \
+#define NETXEN_NIC_STAT(m) MEMBER_SIZE(struct netxen_port, m), \
 			offsetof(struct netxen_port, m)

 #define NETXEN_NIC_PORT_WINDOW 0x10000
diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index ec63b0e..7f00e4a 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1332,7 +1332,7 @@ static int __init usbatm_usb_init(void)
 {
 	dbg("%s: driver version %s", __func__, DRIVER_VERSION);

-	if (sizeof(struct usbatm_control) > sizeof(((struct sk_buff *) 0)->cb)) {
+	if (sizeof(struct usbatm_control) > MEMBER_SIZE(struct sk_buff, cb)) {
 		printk(KERN_ERR "%s unusable with this kernel!\n", usbatm_driver_name);
 		return -EIO;
 	}
diff --git a/drivers/usb/net/cdc_ether.c b/drivers/usb/net/cdc_ether.c
index 44a9154..ee1bdb4 100644
--- a/drivers/usb/net/cdc_ether.c
+++ b/drivers/usb/net/cdc_ether.c
@@ -497,7 +497,7 @@ static struct usb_driver cdc_driver = {

 static int __init cdc_init(void)
 {
-	BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
+	BUILD_BUG_ON((MEMBER_SIZE(struct usbnet, data)
 			< sizeof(struct cdc_state)));

  	return usb_register(&cdc_driver);
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index 6e39e99..f4198ac 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -1283,7 +1283,7 @@ EXPORT_SYMBOL_GPL(usbnet_resume);
 static int __init usbnet_init(void)
 {
 	/* compiler should optimize this out */
-	BUILD_BUG_ON (sizeof (((struct sk_buff *)0)->cb)
+	BUILD_BUG_ON (MEMBER_SIZE(struct sk_buff, cb)
 			< sizeof (struct skb_data));

 	random_ether_addr(node_id);
diff --git a/drivers/usb/serial/io_usbvend.h b/drivers/usb/serial/io_usbvend.h
index f1804fd..9b45a59 100644
--- a/drivers/usb/serial/io_usbvend.h
+++ b/drivers/usb/serial/io_usbvend.h
@@ -507,10 +507,10 @@ struct edge_manuf_descriptor {

 #define MANUF_BOARD_REV_A		1	// First rev of 251+Netchip design

-#define	MANUF_SERNUM_LENGTH		sizeof(((struct edge_manuf_descriptor *)0)->SerialNumber)
-#define	MANUF_ASSYNUM_LENGTH		sizeof(((struct edge_manuf_descriptor *)0)->AssemblyNumber)
-#define	MANUF_OEMASSYNUM_LENGTH		sizeof(((struct edge_manuf_descriptor *)0)->OemAssyNumber)
-#define	MANUF_MANUFDATE_LENGTH		sizeof(((struct edge_manuf_descriptor *)0)->ManufDate)
+#define	MANUF_SERNUM_LENGTH		MEMBER_SIZE(struct edge_manuf_descriptor, SerialNumber)
+#define	MANUF_ASSYNUM_LENGTH		MEMBER_SIZE(struct edge_manuf_descriptor, AssemblyNumber)
+#define	MANUF_OEMASSYNUM_LENGTH		MEMBER_SIZE(struct edge_manuf_descriptor, OemAssyNumber)
+#define	MANUF_MANUFDATE_LENGTH		MEMBER_SIZE(struct edge_manuf_descriptor, ManufDate)

 #define	MANUF_ION_CONFIG_DIAG_NO_LOOP	0x20	// As below but no ext loopback test
 #define	MANUF_ION_CONFIG_DIAG		0x40	// 930 based device: 1=Run h/w diags, 0=norm
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 247efd0..73a65fb 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -1024,7 +1024,7 @@ init_ext2_xattr(void)
 {
 	ext2_xattr_cache = mb_cache_create("ext2_xattr", NULL,
 		sizeof(struct mb_cache_entry) +
-		sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+		MEMBER_SIZE(struct mb_cache_entry, e_indexes[0]), 1, 6);
 	if (!ext2_xattr_cache)
 		return -ENOMEM;
 	return 0;
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index 99857a4..78380a4 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -1299,7 +1299,7 @@ init_ext3_xattr(void)
 {
 	ext3_xattr_cache = mb_cache_create("ext3_xattr", NULL,
 		sizeof(struct mb_cache_entry) +
-		sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+		MEMBER_SIZE(struct mb_cache_entry, e_indexes[0]), 1, 6);
 	if (!ext3_xattr_cache)
 		return -ENOMEM;
 	return 0;
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index dc969c3..764f8fe 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1299,7 +1299,7 @@ init_ext4_xattr(void)
 {
 	ext4_xattr_cache = mb_cache_create("ext4_xattr", NULL,
 		sizeof(struct mb_cache_entry) +
-		sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+		MEMBER_SIZE(struct mb_cache_entry, e_indexes[0]), 1, 6);
 	if (!ext4_xattr_cache)
 		return -ENOMEM;
 	return 0;
diff --git a/fs/mbcache.c b/fs/mbcache.c
index deeb9dc..d31b48c 100644
--- a/fs/mbcache.c
+++ b/fs/mbcache.c
@@ -255,7 +255,7 @@ mb_cache_create(const char *name, struct mb_cache_op *cache_op,
 	struct mb_cache *cache = NULL;

 	if(entry_size < sizeof(struct mb_cache_entry) +
-	   indexes_count * sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]))
+	   indexes_count * MEMBER_SIZE(struct mb_cache_entry, e_indexes[0]))
 		return NULL;

 	cache = kmalloc(sizeof(struct mb_cache) +
diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h
index b125cee..239b06d 100644
--- a/include/acpi/actbl.h
+++ b/include/acpi/actbl.h
@@ -317,7 +317,7 @@ struct fadt_descriptor_rev1 {
  * are removed and replaced by a Flags field.
  */
 #define ACPI_FLAG_OFFSET(d,f,o)         (u8) (ACPI_OFFSET (d,f) + \
-			  sizeof(((d *)0)->f) + o)
+			  MEMBER_SIZE(d, f) + o)
 /*
  * Get the remaining ACPI tables
  */
diff --git a/include/asm-powerpc/fs_pd.h b/include/asm-powerpc/fs_pd.h
index 3d0e819..d49a1e4 100644
--- a/include/asm-powerpc/fs_pd.h
+++ b/include/asm-powerpc/fs_pd.h
@@ -29,7 +29,7 @@ static inline int uart_clock(void)
 ({									\
 	u32 offset = offsetof(cpm2_map_t, member);			\
 	void *addr = ioremap (CPM_MAP_ADDR + offset,			\
-			      sizeof( ((cpm2_map_t*)0)->member));	\
+			      MEMBER_SIZE(cpm2_map_t, member));	\
 	addr;								\
 })

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b0c4a05..d66e3a2 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -33,7 +33,7 @@
 #define __ALIGN_MASK(x,mask)	(((x)+(mask))&~(mask))

 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+#define MEMBER_SIZE(t, f) (sizeof(((t*)0)->f))
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
 #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))

diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index c818f87..5605aba 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -601,7 +601,7 @@ static inline int param_type2af(__be16 type)
 static inline int sctp_sanity_check(void)
 {
 	SCTP_ASSERT(sizeof(struct sctp_ulpevent) <=
-		    sizeof(((struct sk_buff *)0)->cb),
+		    MEMBER_SIZE(struct sk_buff, cb),
 		    "SCTP: ulpevent does not fit in skb!\n", return 0);

 	return 1;

Re: [PATCH] Rename FIELD_SIZEOF to MEMBER_SIZE and use in source tree.

[Randy Dunlap]

On Fri, 22 Dec 2006 10:34:09 -0500 (EST) Robert P. J. Day wrote:

> 
>   Rename the macro FIELD_SIZEOF() in include/linux/kernel.h to
> MEMBER_SIZE(), and make a number of replacements in the source tree
> where that macro simplified the code.

Hi,

Your CodingStyle ch. 17 additions also need to be updated
if/when they are merged (since they refer to FIELD_SIZEOF()).
Did Andrew add that to -mm?  I don't recall.

---
~Randy

Re: [PATCH] Rename FIELD_SIZEOF to MEMBER_SIZE and use in source tree.

[Robert P. J. Day]

On Fri, 22 Dec 2006, Randy Dunlap wrote:

> On Fri, 22 Dec 2006 10:34:09 -0500 (EST) Robert P. J. Day wrote:
>
> >
> >   Rename the macro FIELD_SIZEOF() in include/linux/kernel.h to
> > MEMBER_SIZE(), and make a number of replacements in the source tree
> > where that macro simplified the code.
>
> Hi,
>
> Your CodingStyle ch. 17 additions also need to be updated
> if/when they are merged (since they refer to FIELD_SIZEOF()).
> Did Andrew add that to -mm?  I don't recall.

yes, that went in already.  re-reading christopher's recent posting,
he seems fairly convinced that that macro should be called either
SIZEOF_FIELD or FIELD_SIZE.  i'm happy with either choice, so someone
else can make the decision and i'll go with it.

rday

Re: [PATCH] Rename FIELD_SIZEOF to MEMBER_SIZE and use in source tree.

[Jan Engelhardt]

>
>  Rename the macro FIELD_SIZEOF() in include/linux/kernel.h to
>MEMBER_SIZE(), and make a number of replacements in the source tree
>where that macro simplified the code.

Looks sane. (Random thought: SIZEOF_MEMBER())


	-`J'
-- 

Re: [PATCH] Rename FIELD_SIZEOF to MEMBER_SIZE and use in source tree.

[Gene Heskett]

On Friday 22 December 2006 18:21, Jan Engelhardt wrote:
>>  Rename the macro FIELD_SIZEOF() in include/linux/kernel.h to
>>MEMBER_SIZE(), and make a number of replacements in the source tree
>>where that macro simplified the code.
>
>Looks sane. (Random thought: SIZEOF_MEMBER())
>
Lets not go there, spamassassin already has enough trouble with variations 
on that theme...
>
>	-`J'

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Yahoo.com and AOL/TW attorneys please note, additions to the above
message by Gene Heskett are:
Copyright 2006 by Maurice Eugene Heskett, all rights reserved.