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[PATCH] ufs: wrong type cast
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There are two ugly macros in ufs code:
#define UCPI_UBH ((struct ufs_buffer_head *)ucpi)
#define USPI_UBH ((struct ufs_buffer_head *)uspi)
when uspi looks like
struct {
struct ufs_buffer_head ;
}
and USPI_UBH has some sence,
ucpi looks like
struct {
struct not_ufs_buffer_head;
}

To prevent bugs in future, this patch convert macros to inline function and
fix "ucpi" structure.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Evgeniy Dushistov authored and Linus Torvalds committed Jun 25, 2006
1 parent b71034e commit 9695ef1
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Showing 7 changed files with 91 additions and 85 deletions.
84 changes: 42 additions & 42 deletions fs/ufs/balloc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -69,19 +69,19 @@ void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
ucpi = ufs_load_cylinder (sb, cgno);
if (!ucpi)
goto failed;
ucg = ubh_get_ucg (UCPI_UBH);
ucg = ubh_get_ucg (UCPI_UBH(ucpi));
if (!ufs_cg_chkmagic(sb, ucg)) {
ufs_panic (sb, "ufs_free_fragments", "internal error, bad magic number on cg %u", cgno);
goto failed;
}

end_bit = bit + count;
bbase = ufs_blknum (bit);
blkmap = ubh_blkmap (UCPI_UBH, ucpi->c_freeoff, bbase);
blkmap = ubh_blkmap (UCPI_UBH(ucpi), ucpi->c_freeoff, bbase);
ufs_fragacct (sb, blkmap, ucg->cg_frsum, -1);
for (i = bit; i < end_bit; i++) {
if (ubh_isclr (UCPI_UBH, ucpi->c_freeoff, i))
ubh_setbit (UCPI_UBH, ucpi->c_freeoff, i);
if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, i))
ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, i);
else
ufs_error (sb, "ufs_free_fragments",
"bit already cleared for fragment %u", i);
Expand All @@ -93,14 +93,14 @@ void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
fs32_add(sb, &ucg->cg_cs.cs_nffree, count);
fs32_add(sb, &usb1->fs_cstotal.cs_nffree, count);
fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
blkmap = ubh_blkmap (UCPI_UBH, ucpi->c_freeoff, bbase);
blkmap = ubh_blkmap (UCPI_UBH(ucpi), ucpi->c_freeoff, bbase);
ufs_fragacct(sb, blkmap, ucg->cg_frsum, 1);

/*
* Trying to reassemble free fragments into block
*/
blkno = ufs_fragstoblks (bbase);
if (ubh_isblockset(UCPI_UBH, ucpi->c_freeoff, blkno)) {
if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) {
fs32_sub(sb, &ucg->cg_cs.cs_nffree, uspi->s_fpb);
fs32_sub(sb, &usb1->fs_cstotal.cs_nffree, uspi->s_fpb);
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, uspi->s_fpb);
Expand All @@ -114,11 +114,11 @@ void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
}

ubh_mark_buffer_dirty (USPI_UBH);
ubh_mark_buffer_dirty (UCPI_UBH);
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block (SWRITE, 1, (struct ufs_buffer_head **)&ucpi);
ubh_wait_on_buffer (UCPI_UBH);
ubh_wait_on_buffer (UCPI_UBH(ucpi));
}
sb->s_dirt = 1;

Expand Down Expand Up @@ -176,18 +176,18 @@ void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
ucpi = ufs_load_cylinder (sb, cgno);
if (!ucpi)
goto failed;
ucg = ubh_get_ucg (UCPI_UBH);
ucg = ubh_get_ucg (UCPI_UBH(ucpi));
if (!ufs_cg_chkmagic(sb, ucg)) {
ufs_panic (sb, "ufs_free_blocks", "internal error, bad magic number on cg %u", cgno);
goto failed;
}

for (i = bit; i < end_bit; i += uspi->s_fpb) {
blkno = ufs_fragstoblks(i);
if (ubh_isblockset(UCPI_UBH, ucpi->c_freeoff, blkno)) {
if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) {
ufs_error(sb, "ufs_free_blocks", "freeing free fragment");
}
ubh_setblock(UCPI_UBH, ucpi->c_freeoff, blkno);
ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
ufs_clusteracct (sb, ucpi, blkno, 1);
DQUOT_FREE_BLOCK(inode, uspi->s_fpb);
Expand All @@ -200,11 +200,11 @@ void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
}

ubh_mark_buffer_dirty (USPI_UBH);
ubh_mark_buffer_dirty (UCPI_UBH);
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block (SWRITE, 1, (struct ufs_buffer_head **)&ucpi);
ubh_wait_on_buffer (UCPI_UBH);
ubh_wait_on_buffer (UCPI_UBH(ucpi));
}

if (overflow) {
Expand Down Expand Up @@ -493,7 +493,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
ucpi = ufs_load_cylinder (sb, cgno);
if (!ucpi)
return 0;
ucg = ubh_get_ucg (UCPI_UBH);
ucg = ubh_get_ucg (UCPI_UBH(ucpi));
if (!ufs_cg_chkmagic(sb, ucg)) {
ufs_panic (sb, "ufs_add_fragments",
"internal error, bad magic number on cg %u", cgno);
Expand All @@ -503,14 +503,14 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
fragno = ufs_dtogd (fragment);
fragoff = ufs_fragnum (fragno);
for (i = oldcount; i < newcount; i++)
if (ubh_isclr (UCPI_UBH, ucpi->c_freeoff, fragno + i))
if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i))
return 0;
/*
* Block can be extended
*/
ucg->cg_time = cpu_to_fs32(sb, get_seconds());
for (i = newcount; i < (uspi->s_fpb - fragoff); i++)
if (ubh_isclr (UCPI_UBH, ucpi->c_freeoff, fragno + i))
if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i))
break;
fragsize = i - oldcount;
if (!fs32_to_cpu(sb, ucg->cg_frsum[fragsize]))
Expand All @@ -520,7 +520,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
if (fragsize != count)
fs32_add(sb, &ucg->cg_frsum[fragsize - count], 1);
for (i = oldcount; i < newcount; i++)
ubh_clrbit (UCPI_UBH, ucpi->c_freeoff, fragno + i);
ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i);
if(DQUOT_ALLOC_BLOCK(inode, count)) {
*err = -EDQUOT;
return 0;
Expand All @@ -530,11 +530,11 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
fs32_sub(sb, &usb1->fs_cstotal.cs_nffree, count);

ubh_mark_buffer_dirty (USPI_UBH);
ubh_mark_buffer_dirty (UCPI_UBH);
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block (SWRITE, 1, (struct ufs_buffer_head **)&ucpi);
ubh_wait_on_buffer (UCPI_UBH);
ubh_wait_on_buffer (UCPI_UBH(ucpi));
}
sb->s_dirt = 1;

Expand Down Expand Up @@ -602,7 +602,7 @@ static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
ucpi = ufs_load_cylinder (sb, cgno);
if (!ucpi)
return 0;
ucg = ubh_get_ucg (UCPI_UBH);
ucg = ubh_get_ucg (UCPI_UBH(ucpi));
if (!ufs_cg_chkmagic(sb, ucg))
ufs_panic (sb, "ufs_alloc_fragments",
"internal error, bad magic number on cg %u", cgno);
Expand All @@ -625,7 +625,7 @@ static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
return 0;
goal = ufs_dtogd (result);
for (i = count; i < uspi->s_fpb; i++)
ubh_setbit (UCPI_UBH, ucpi->c_freeoff, goal + i);
ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i);
i = uspi->s_fpb - count;
DQUOT_FREE_BLOCK(inode, i);

Expand All @@ -644,7 +644,7 @@ static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
return 0;
}
for (i = 0; i < count; i++)
ubh_clrbit (UCPI_UBH, ucpi->c_freeoff, result + i);
ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, result + i);

fs32_sub(sb, &ucg->cg_cs.cs_nffree, count);
fs32_sub(sb, &usb1->fs_cstotal.cs_nffree, count);
Expand All @@ -655,11 +655,11 @@ static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
fs32_add(sb, &ucg->cg_frsum[allocsize - count], 1);

succed:
ubh_mark_buffer_dirty (USPI_UBH);
ubh_mark_buffer_dirty (UCPI_UBH);
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block (SWRITE, 1, (struct ufs_buffer_head **)&ucpi);
ubh_wait_on_buffer (UCPI_UBH);
ubh_wait_on_buffer (UCPI_UBH(ucpi));
}
sb->s_dirt = 1;

Expand All @@ -682,7 +682,7 @@ static unsigned ufs_alloccg_block (struct inode * inode,
sb = inode->i_sb;
uspi = UFS_SB(sb)->s_uspi;
usb1 = ubh_get_usb_first(uspi);
ucg = ubh_get_ucg(UCPI_UBH);
ucg = ubh_get_ucg(UCPI_UBH(ucpi));

if (goal == 0) {
goal = ucpi->c_rotor;
Expand All @@ -694,7 +694,7 @@ static unsigned ufs_alloccg_block (struct inode * inode,
/*
* If the requested block is available, use it.
*/
if (ubh_isblockset(UCPI_UBH, ucpi->c_freeoff, ufs_fragstoblks(goal))) {
if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, ufs_fragstoblks(goal))) {
result = goal;
goto gotit;
}
Expand All @@ -706,7 +706,7 @@ static unsigned ufs_alloccg_block (struct inode * inode,
ucpi->c_rotor = result;
gotit:
blkno = ufs_fragstoblks(result);
ubh_clrblock (UCPI_UBH, ucpi->c_freeoff, blkno);
ubh_clrblock (UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
ufs_clusteracct (sb, ucpi, blkno, -1);
if(DQUOT_ALLOC_BLOCK(inode, uspi->s_fpb)) {
Expand Down Expand Up @@ -739,20 +739,20 @@ static unsigned ufs_bitmap_search (struct super_block * sb,

uspi = UFS_SB(sb)->s_uspi;
usb1 = ubh_get_usb_first (uspi);
ucg = ubh_get_ucg(UCPI_UBH);
ucg = ubh_get_ucg(UCPI_UBH(ucpi));

if (goal)
start = ufs_dtogd(goal) >> 3;
else
start = ucpi->c_frotor >> 3;

length = ((uspi->s_fpg + 7) >> 3) - start;
location = ubh_scanc(UCPI_UBH, ucpi->c_freeoff + start, length,
location = ubh_scanc(UCPI_UBH(ucpi), ucpi->c_freeoff + start, length,
(uspi->s_fpb == 8) ? ufs_fragtable_8fpb : ufs_fragtable_other,
1 << (count - 1 + (uspi->s_fpb & 7)));
if (location == 0) {
length = start + 1;
location = ubh_scanc(UCPI_UBH, ucpi->c_freeoff, length,
location = ubh_scanc(UCPI_UBH(ucpi), ucpi->c_freeoff, length,
(uspi->s_fpb == 8) ? ufs_fragtable_8fpb : ufs_fragtable_other,
1 << (count - 1 + (uspi->s_fpb & 7)));
if (location == 0) {
Expand All @@ -769,7 +769,7 @@ static unsigned ufs_bitmap_search (struct super_block * sb,
/*
* found the byte in the map
*/
blockmap = ubh_blkmap(UCPI_UBH, ucpi->c_freeoff, result);
blockmap = ubh_blkmap(UCPI_UBH(ucpi), ucpi->c_freeoff, result);
fragsize = 0;
for (possition = 0, mask = 1; possition < 8; possition++, mask <<= 1) {
if (blockmap & mask) {
Expand Down Expand Up @@ -808,9 +808,9 @@ static void ufs_clusteracct(struct super_block * sb,
return;

if (cnt > 0)
ubh_setbit(UCPI_UBH, ucpi->c_clusteroff, blkno);
ubh_setbit(UCPI_UBH(ucpi), ucpi->c_clusteroff, blkno);
else
ubh_clrbit(UCPI_UBH, ucpi->c_clusteroff, blkno);
ubh_clrbit(UCPI_UBH(ucpi), ucpi->c_clusteroff, blkno);

/*
* Find the size of the cluster going forward.
Expand All @@ -819,7 +819,7 @@ static void ufs_clusteracct(struct super_block * sb,
end = start + uspi->s_contigsumsize;
if ( end >= ucpi->c_nclusterblks)
end = ucpi->c_nclusterblks;
i = ubh_find_next_zero_bit (UCPI_UBH, ucpi->c_clusteroff, end, start);
i = ubh_find_next_zero_bit (UCPI_UBH(ucpi), ucpi->c_clusteroff, end, start);
if (i > end)
i = end;
forw = i - start;
Expand All @@ -831,7 +831,7 @@ static void ufs_clusteracct(struct super_block * sb,
end = start - uspi->s_contigsumsize;
if (end < 0 )
end = -1;
i = ubh_find_last_zero_bit (UCPI_UBH, ucpi->c_clusteroff, start, end);
i = ubh_find_last_zero_bit (UCPI_UBH(ucpi), ucpi->c_clusteroff, start, end);
if ( i < end)
i = end;
back = start - i;
Expand All @@ -843,11 +843,11 @@ static void ufs_clusteracct(struct super_block * sb,
i = back + forw + 1;
if (i > uspi->s_contigsumsize)
i = uspi->s_contigsumsize;
fs32_add(sb, (__fs32*)ubh_get_addr(UCPI_UBH, ucpi->c_clustersumoff + (i << 2)), cnt);
fs32_add(sb, (__fs32*)ubh_get_addr(UCPI_UBH(ucpi), ucpi->c_clustersumoff + (i << 2)), cnt);
if (back > 0)
fs32_sub(sb, (__fs32*)ubh_get_addr(UCPI_UBH, ucpi->c_clustersumoff + (back << 2)), cnt);
fs32_sub(sb, (__fs32*)ubh_get_addr(UCPI_UBH(ucpi), ucpi->c_clustersumoff + (back << 2)), cnt);
if (forw > 0)
fs32_sub(sb, (__fs32*)ubh_get_addr(UCPI_UBH, ucpi->c_clustersumoff + (forw << 2)), cnt);
fs32_sub(sb, (__fs32*)ubh_get_addr(UCPI_UBH(ucpi), ucpi->c_clustersumoff + (forw << 2)), cnt);
}


Expand Down
18 changes: 9 additions & 9 deletions fs/ufs/cylinder.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -47,14 +47,14 @@ static void ufs_read_cylinder (struct super_block * sb,
ucpi = sbi->s_ucpi[bitmap_nr];
ucg = (struct ufs_cylinder_group *)sbi->s_ucg[cgno]->b_data;

UCPI_UBH->fragment = ufs_cgcmin(cgno);
UCPI_UBH->count = uspi->s_cgsize >> sb->s_blocksize_bits;
UCPI_UBH(ucpi)->fragment = ufs_cgcmin(cgno);
UCPI_UBH(ucpi)->count = uspi->s_cgsize >> sb->s_blocksize_bits;
/*
* We have already the first fragment of cylinder group block in buffer
*/
UCPI_UBH->bh[0] = sbi->s_ucg[cgno];
for (i = 1; i < UCPI_UBH->count; i++)
if (!(UCPI_UBH->bh[i] = sb_bread(sb, UCPI_UBH->fragment + i)))
UCPI_UBH(ucpi)->bh[0] = sbi->s_ucg[cgno];
for (i = 1; i < UCPI_UBH(ucpi)->count; i++)
if (!(UCPI_UBH(ucpi)->bh[i] = sb_bread(sb, UCPI_UBH(ucpi)->fragment + i)))
goto failed;
sbi->s_cgno[bitmap_nr] = cgno;

Expand Down Expand Up @@ -103,7 +103,7 @@ void ufs_put_cylinder (struct super_block * sb, unsigned bitmap_nr)
return;
}
ucpi = sbi->s_ucpi[bitmap_nr];
ucg = ubh_get_ucg(UCPI_UBH);
ucg = ubh_get_ucg(UCPI_UBH(ucpi));

if (uspi->s_ncg > UFS_MAX_GROUP_LOADED && bitmap_nr >= sbi->s_cg_loaded) {
ufs_panic (sb, "ufs_put_cylinder", "internal error");
Expand All @@ -116,9 +116,9 @@ void ufs_put_cylinder (struct super_block * sb, unsigned bitmap_nr)
ucg->cg_rotor = cpu_to_fs32(sb, ucpi->c_rotor);
ucg->cg_frotor = cpu_to_fs32(sb, ucpi->c_frotor);
ucg->cg_irotor = cpu_to_fs32(sb, ucpi->c_irotor);
ubh_mark_buffer_dirty (UCPI_UBH);
for (i = 1; i < UCPI_UBH->count; i++) {
brelse (UCPI_UBH->bh[i]);
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
for (i = 1; i < UCPI_UBH(ucpi)->count; i++) {
brelse (UCPI_UBH(ucpi)->bh[i]);
}

sbi->s_cgno[bitmap_nr] = UFS_CGNO_EMPTY;
Expand Down
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