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Message-Id: <1164888908.3752.334.camel@quoit.chygwyn.com>
Date: Thu, 30 Nov 2006 12:15:08 +0000
From: Steven Whitehouse <swhiteho@...hat.com>
To: cluster-devel@...hat.com, linux-kernel@...r.kernel.org
Cc: Al Viro <viro@...iv.linux.org.uk>
Subject: [GFS2] gfs2 misc endianness annotations [15/70]
>>From b44b84d765b02f813a67b96bf79e3b5d4d621631 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@...iv.linux.org.uk>
Date: Sat, 14 Oct 2006 10:46:30 -0400
Subject: [PATCH] [GFS2] gfs2 misc endianness annotations
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@...hat.com>
---
fs/gfs2/bmap.c | 32 ++++++++++++++++----------------
fs/gfs2/dir.c | 24 +++++++++++++-----------
fs/gfs2/eattr.c | 27 ++++++++++++++-------------
fs/gfs2/eattr.h | 6 +++---
fs/gfs2/inode.c | 9 +++++----
fs/gfs2/ops_export.c | 30 ++++++++++++------------------
fs/gfs2/quota.c | 3 +--
fs/gfs2/util.h | 6 ++----
8 files changed, 66 insertions(+), 71 deletions(-)
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 06e9a8c..51f6356 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -38,8 +38,8 @@ struct metapath {
};
typedef int (*block_call_t) (struct gfs2_inode *ip, struct buffer_head *dibh,
- struct buffer_head *bh, u64 *top,
- u64 *bottom, unsigned int height,
+ struct buffer_head *bh, __be64 *top,
+ __be64 *bottom, unsigned int height,
void *data);
struct strip_mine {
@@ -230,7 +230,7 @@ static int build_height(struct inode *in
struct buffer_head *blocks[GFS2_MAX_META_HEIGHT];
struct gfs2_dinode *di;
int error;
- u64 *bp;
+ __be64 *bp;
u64 bn;
unsigned n;
@@ -255,7 +255,7 @@ static int build_height(struct inode *in
GFS2_FORMAT_IN);
gfs2_buffer_clear_tail(blocks[n],
sizeof(struct gfs2_meta_header));
- bp = (u64 *)(blocks[n]->b_data +
+ bp = (__be64 *)(blocks[n]->b_data +
sizeof(struct gfs2_meta_header));
*bp = cpu_to_be64(blocks[n+1]->b_blocknr);
brelse(blocks[n]);
@@ -360,15 +360,15 @@ static void find_metapath(struct gfs2_in
* metadata tree.
*/
-static inline u64 *metapointer(struct buffer_head *bh, int *boundary,
+static inline __be64 *metapointer(struct buffer_head *bh, int *boundary,
unsigned int height, const struct metapath *mp)
{
unsigned int head_size = (height > 0) ?
sizeof(struct gfs2_meta_header) : sizeof(struct gfs2_dinode);
- u64 *ptr;
+ __be64 *ptr;
*boundary = 0;
- ptr = ((u64 *)(bh->b_data + head_size)) + mp->mp_list[height];
- if (ptr + 1 == (u64 *)(bh->b_data + bh->b_size))
+ ptr = ((__be64 *)(bh->b_data + head_size)) + mp->mp_list[height];
+ if (ptr + 1 == (__be64 *)(bh->b_data + bh->b_size))
*boundary = 1;
return ptr;
}
@@ -394,7 +394,7 @@ static int lookup_block(struct gfs2_inod
int *new, u64 *block)
{
int boundary;
- u64 *ptr = metapointer(bh, &boundary, height, mp);
+ __be64 *ptr = metapointer(bh, &boundary, height, mp);
if (*ptr) {
*block = be64_to_cpu(*ptr);
@@ -600,7 +600,7 @@ static int recursive_scan(struct gfs2_in
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct buffer_head *bh = NULL;
- u64 *top, *bottom;
+ __be64 *top, *bottom;
u64 bn;
int error;
int mh_size = sizeof(struct gfs2_meta_header);
@@ -611,17 +611,17 @@ static int recursive_scan(struct gfs2_in
return error;
dibh = bh;
- top = (u64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + mp->mp_list[0];
- bottom = (u64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + sdp->sd_diptrs;
+ top = (__be64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + mp->mp_list[0];
+ bottom = (__be64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + sdp->sd_diptrs;
} else {
error = gfs2_meta_indirect_buffer(ip, height, block, 0, &bh);
if (error)
return error;
- top = (u64 *)(bh->b_data + mh_size) +
+ top = (__be64 *)(bh->b_data + mh_size) +
(first ? mp->mp_list[height] : 0);
- bottom = (u64 *)(bh->b_data + mh_size) + sdp->sd_inptrs;
+ bottom = (__be64 *)(bh->b_data + mh_size) + sdp->sd_inptrs;
}
error = bc(ip, dibh, bh, top, bottom, height, data);
@@ -660,7 +660,7 @@ out:
*/
static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
- struct buffer_head *bh, u64 *top, u64 *bottom,
+ struct buffer_head *bh, __be64 *top, __be64 *bottom,
unsigned int height, void *data)
{
struct strip_mine *sm = data;
@@ -668,7 +668,7 @@ static int do_strip(struct gfs2_inode *i
struct gfs2_rgrp_list rlist;
u64 bn, bstart;
u32 blen;
- u64 *p;
+ __be64 *p;
unsigned int rg_blocks = 0;
int metadata;
unsigned int revokes = 0;
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index d67a376..59dc823 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -713,12 +713,12 @@ static int get_leaf(struct gfs2_inode *d
static int get_leaf_nr(struct gfs2_inode *dip, u32 index,
u64 *leaf_out)
{
- u64 leaf_no;
+ __be64 leaf_no;
int error;
error = gfs2_dir_read_data(dip, (char *)&leaf_no,
- index * sizeof(u64),
- sizeof(u64), 0);
+ index * sizeof(__be64),
+ sizeof(__be64), 0);
if (error != sizeof(u64))
return (error < 0) ? error : -EIO;
@@ -837,7 +837,8 @@ static int dir_make_exhash(struct inode
struct gfs2_leaf *leaf;
int y;
u32 x;
- u64 *lp, bn;
+ __be64 *lp;
+ u64 bn;
int error;
error = gfs2_meta_inode_buffer(dip, &dibh);
@@ -893,7 +894,7 @@ static int dir_make_exhash(struct inode
gfs2_trans_add_bh(dip->i_gl, dibh, 1);
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
- lp = (u64 *)(dibh->b_data + sizeof(struct gfs2_dinode));
+ lp = (__be64 *)(dibh->b_data + sizeof(struct gfs2_dinode));
for (x = sdp->sd_hash_ptrs; x--; lp++)
*lp = cpu_to_be64(bn);
@@ -929,7 +930,8 @@ static int dir_split_leaf(struct inode *
struct gfs2_leaf *nleaf, *oleaf;
struct gfs2_dirent *dent = NULL, *prev = NULL, *next = NULL, *new;
u32 start, len, half_len, divider;
- u64 bn, *lp, leaf_no;
+ u64 bn, leaf_no;
+ __be64 *lp;
u32 index;
int x, moved = 0;
int error;
@@ -974,7 +976,7 @@ static int dir_split_leaf(struct inode *
/* Change the pointers.
Don't bother distinguishing stuffed from non-stuffed.
This code is complicated enough already. */
- lp = kmalloc(half_len * sizeof(u64), GFP_NOFS | __GFP_NOFAIL);
+ lp = kmalloc(half_len * sizeof(__be64), GFP_NOFS | __GFP_NOFAIL);
/* Change the pointers */
for (x = 0; x < half_len; x++)
lp[x] = cpu_to_be64(bn);
@@ -1341,7 +1343,7 @@ static int dir_e_read(struct inode *inod
u32 hsize, len = 0;
u32 ht_offset, lp_offset, ht_offset_cur = -1;
u32 hash, index;
- u64 *lp;
+ __be64 *lp;
int copied = 0;
int error = 0;
unsigned depth = 0;
@@ -1365,7 +1367,7 @@ static int dir_e_read(struct inode *inod
if (ht_offset_cur != ht_offset) {
error = gfs2_dir_read_data(dip, (char *)lp,
- ht_offset * sizeof(u64),
+ ht_offset * sizeof(__be64),
sdp->sd_hash_bsize, 1);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
@@ -1715,7 +1717,7 @@ static int foreach_leaf(struct gfs2_inod
u32 hsize, len;
u32 ht_offset, lp_offset, ht_offset_cur = -1;
u32 index = 0;
- u64 *lp;
+ __be64 *lp;
u64 leaf_no;
int error = 0;
@@ -1735,7 +1737,7 @@ static int foreach_leaf(struct gfs2_inod
if (ht_offset_cur != ht_offset) {
error = gfs2_dir_read_data(dip, (char *)lp,
- ht_offset * sizeof(u64),
+ ht_offset * sizeof(__be64),
sdp->sd_hash_bsize, 1);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
index a65a4cc..518f0c0 100644
--- a/fs/gfs2/eattr.c
+++ b/fs/gfs2/eattr.c
@@ -112,7 +112,7 @@ fail:
static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data)
{
struct buffer_head *bh, *eabh;
- u64 *eablk, *end;
+ __be64 *eablk, *end;
int error;
error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT, &bh);
@@ -129,7 +129,7 @@ static int ea_foreach(struct gfs2_inode
goto out;
}
- eablk = (u64 *)(bh->b_data + sizeof(struct gfs2_meta_header));
+ eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header));
end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs;
for (; eablk < end; eablk++) {
@@ -224,7 +224,8 @@ static int ea_dealloc_unstuffed(struct g
struct gfs2_rgrpd *rgd;
struct gfs2_holder rg_gh;
struct buffer_head *dibh;
- u64 *dataptrs, bn = 0;
+ __be64 *dataptrs;
+ u64 bn = 0;
u64 bstart = 0;
unsigned int blen = 0;
unsigned int blks = 0;
@@ -444,7 +445,7 @@ static int ea_get_unstuffed(struct gfs2_
struct buffer_head **bh;
unsigned int amount = GFS2_EA_DATA_LEN(ea);
unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize);
- u64 *dataptrs = GFS2_EA2DATAPTRS(ea);
+ __be64 *dataptrs = GFS2_EA2DATAPTRS(ea);
unsigned int x;
int error = 0;
@@ -629,7 +630,7 @@ static int ea_write(struct gfs2_inode *i
ea->ea_num_ptrs = 0;
memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len);
} else {
- u64 *dataptr = GFS2_EA2DATAPTRS(ea);
+ __be64 *dataptr = GFS2_EA2DATAPTRS(ea);
const char *data = er->er_data;
unsigned int data_len = er->er_data_len;
unsigned int copy;
@@ -931,12 +932,12 @@ static int ea_set_block(struct gfs2_inod
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct buffer_head *indbh, *newbh;
- u64 *eablk;
+ __be64 *eablk;
int error;
int mh_size = sizeof(struct gfs2_meta_header);
if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) {
- u64 *end;
+ __be64 *end;
error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT,
&indbh);
@@ -948,7 +949,7 @@ static int ea_set_block(struct gfs2_inod
goto out;
}
- eablk = (u64 *)(indbh->b_data + mh_size);
+ eablk = (__be64 *)(indbh->b_data + mh_size);
end = eablk + sdp->sd_inptrs;
for (; eablk < end; eablk++)
@@ -971,7 +972,7 @@ static int ea_set_block(struct gfs2_inod
gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN);
gfs2_buffer_clear_tail(indbh, mh_size);
- eablk = (u64 *)(indbh->b_data + mh_size);
+ eablk = (__be64 *)(indbh->b_data + mh_size);
*eablk = cpu_to_be64(ip->i_di.di_eattr);
ip->i_di.di_eattr = blk;
ip->i_di.di_flags |= GFS2_DIF_EA_INDIRECT;
@@ -1202,7 +1203,7 @@ static int ea_acl_chmod_unstuffed(struct
struct buffer_head **bh;
unsigned int amount = GFS2_EA_DATA_LEN(ea);
unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize);
- u64 *dataptrs = GFS2_EA2DATAPTRS(ea);
+ __be64 *dataptrs = GFS2_EA2DATAPTRS(ea);
unsigned int x;
int error;
@@ -1300,7 +1301,7 @@ static int ea_dealloc_indirect(struct gf
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrp_list rlist;
struct buffer_head *indbh, *dibh;
- u64 *eablk, *end;
+ __be64 *eablk, *end;
unsigned int rg_blocks = 0;
u64 bstart = 0;
unsigned int blen = 0;
@@ -1319,7 +1320,7 @@ static int ea_dealloc_indirect(struct gf
goto out;
}
- eablk = (u64 *)(indbh->b_data + sizeof(struct gfs2_meta_header));
+ eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header));
end = eablk + sdp->sd_inptrs;
for (; eablk < end; eablk++) {
@@ -1363,7 +1364,7 @@ static int ea_dealloc_indirect(struct gf
gfs2_trans_add_bh(ip->i_gl, indbh, 1);
- eablk = (u64 *)(indbh->b_data + sizeof(struct gfs2_meta_header));
+ eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header));
bstart = 0;
blen = 0;
diff --git a/fs/gfs2/eattr.h b/fs/gfs2/eattr.h
index ffa6594..c82dbe0 100644
--- a/fs/gfs2/eattr.h
+++ b/fs/gfs2/eattr.h
@@ -19,7 +19,7 @@ #define GFS2_EA_DATA_LEN(ea) be32_to_cpu
#define GFS2_EA_SIZE(ea) \
ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \
((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \
- (sizeof(u64) * (ea)->ea_num_ptrs)), 8)
+ (sizeof(__be64) * (ea)->ea_num_ptrs)), 8)
#define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs)
#define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST)
@@ -29,13 +29,13 @@ ALIGN(sizeof(struct gfs2_ea_header) + (e
#define GFS2_EAREQ_SIZE_UNSTUFFED(sdp, er) \
ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + \
- sizeof(u64) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8)
+ sizeof(__be64) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8)
#define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1))
#define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len)
#define GFS2_EA2DATAPTRS(ea) \
-((u64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8)))
+((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8)))
#define GFS2_EA2NEXT(ea) \
((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea)))
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index dadd1f3..fb96930 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -500,21 +500,22 @@ static int pick_formal_ino_2(struct gfs2
if (!ir.ir_length) {
struct buffer_head *m_bh;
u64 x, y;
+ __be64 z;
error = gfs2_meta_inode_buffer(m_ip, &m_bh);
if (error)
goto out_brelse;
- x = *(u64 *)(m_bh->b_data + sizeof(struct gfs2_dinode));
- x = y = be64_to_cpu(x);
+ z = *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode));
+ x = y = be64_to_cpu(z);
ir.ir_start = x;
ir.ir_length = GFS2_INUM_QUANTUM;
x += GFS2_INUM_QUANTUM;
if (x < y)
gfs2_consist_inode(m_ip);
- x = cpu_to_be64(x);
+ z = cpu_to_be64(x);
gfs2_trans_add_bh(m_ip->i_gl, m_bh, 1);
- *(u64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)) = x;
+ *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)) = z;
brelse(m_bh);
}
diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index 33423a5..b4e7b87 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -27,13 +27,14 @@ #include "rgrp.h"
#include "util.h"
static struct dentry *gfs2_decode_fh(struct super_block *sb,
- __u32 *fh,
+ __u32 *p,
int fh_len,
int fh_type,
int (*acceptable)(void *context,
struct dentry *dentry),
void *context)
{
+ __be32 *fh = (__force __be32 *)p;
struct gfs2_fh_obj fh_obj;
struct gfs2_inum_host *this, parent;
@@ -65,9 +66,10 @@ static struct dentry *gfs2_decode_fh(str
acceptable, context);
}
-static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len,
+static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
int connectable)
{
+ __be32 *fh = (__force __be32 *)p;
struct inode *inode = dentry->d_inode;
struct super_block *sb = inode->i_sb;
struct gfs2_inode *ip = GFS2_I(inode);
@@ -76,14 +78,10 @@ static int gfs2_encode_fh(struct dentry
(connectable && *len < GFS2_LARGE_FH_SIZE))
return 255;
- fh[0] = ip->i_num.no_formal_ino >> 32;
- fh[0] = cpu_to_be32(fh[0]);
- fh[1] = ip->i_num.no_formal_ino & 0xFFFFFFFF;
- fh[1] = cpu_to_be32(fh[1]);
- fh[2] = ip->i_num.no_addr >> 32;
- fh[2] = cpu_to_be32(fh[2]);
- fh[3] = ip->i_num.no_addr & 0xFFFFFFFF;
- fh[3] = cpu_to_be32(fh[3]);
+ fh[0] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
+ fh[1] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
+ fh[2] = cpu_to_be32(ip->i_num.no_addr >> 32);
+ fh[3] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
*len = GFS2_SMALL_FH_SIZE;
if (!connectable || inode == sb->s_root->d_inode)
@@ -95,14 +93,10 @@ static int gfs2_encode_fh(struct dentry
igrab(inode);
spin_unlock(&dentry->d_lock);
- fh[4] = ip->i_num.no_formal_ino >> 32;
- fh[4] = cpu_to_be32(fh[4]);
- fh[5] = ip->i_num.no_formal_ino & 0xFFFFFFFF;
- fh[5] = cpu_to_be32(fh[5]);
- fh[6] = ip->i_num.no_addr >> 32;
- fh[6] = cpu_to_be32(fh[6]);
- fh[7] = ip->i_num.no_addr & 0xFFFFFFFF;
- fh[7] = cpu_to_be32(fh[7]);
+ fh[4] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
+ fh[5] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
+ fh[6] = cpu_to_be32(ip->i_num.no_addr >> 32);
+ fh[7] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
fh[8] = cpu_to_be32(inode->i_mode);
fh[9] = 0; /* pad to double word */
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 009d86c..5d00e9b 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -539,8 +539,7 @@ static void do_qc(struct gfs2_quota_data
qc->qc_id = cpu_to_be32(qd->qd_id);
}
- x = qc->qc_change;
- x = be64_to_cpu(x) + change;
+ x = be64_to_cpu(qc->qc_change) + change;
qc->qc_change = cpu_to_be64(x);
spin_lock(&sdp->sd_quota_spin);
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
index 76a5089..ca8667c 100644
--- a/fs/gfs2/util.h
+++ b/fs/gfs2/util.h
@@ -83,8 +83,7 @@ static inline int gfs2_meta_check_i(stru
char *file, unsigned int line)
{
struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
- u32 magic = mh->mh_magic;
- magic = be32_to_cpu(magic);
+ u32 magic = be32_to_cpu(mh->mh_magic);
if (unlikely(magic != GFS2_MAGIC))
return gfs2_meta_check_ii(sdp, bh, "magic number", function,
file, line);
@@ -107,9 +106,8 @@ static inline int gfs2_metatype_check_i(
char *file, unsigned int line)
{
struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
- u32 magic = mh->mh_magic;
+ u32 magic = be32_to_cpu(mh->mh_magic);
u16 t = be32_to_cpu(mh->mh_type);
- magic = be32_to_cpu(magic);
if (unlikely(magic != GFS2_MAGIC))
return gfs2_meta_check_ii(sdp, bh, "magic number", function,
file, line);
--
1.4.1
-
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