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[PATCH] ufs: make fsck -f happy
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ufs super block contains some statistic about file systems, like amount of
directories, free blocks, inodes and so on.

UFS1 hold this information in one location and uses 32bit integers for such
information, UFS2 hold statistic in another location and uses 64bit integers.

There is transition variant, if UFS1 has type 44BSD and flags field in super
block has some special value this mean that we work with statistic like UFS2
does.  and this also means that nobody care about old(UFS1) statistic.

So if start fsck against such file system, after usage linux ufs driver, it
found error: at now only UFS1 like statistic is updated.

This patch should fix this.  Also it contains some minor cleanup: CodingSytle
and remove unused variables.

Signed-off-by: Evgeniy Dushistov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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@Dushistov
Dushistov authored and Linus Torvalds committed Jun 25, 2006
1 parent 577a827 commit ee3ffd6
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Showing 5 changed files with 139 additions and 57 deletions.
24 changes: 12 additions & 12 deletions fs/ufs/balloc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -83,7 +83,7 @@ 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);
uspi->cs_total.cs_nffree += count;
fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
blkmap = ubh_blkmap (UCPI_UBH(ucpi), ucpi->c_freeoff, bbase);
ufs_fragacct(sb, blkmap, ucg->cg_frsum, 1);
Expand All @@ -94,12 +94,12 @@ void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
blkno = ufs_fragstoblks (bbase);
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);
uspi->cs_total.cs_nffree -= uspi->s_fpb;
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, uspi->s_fpb);
if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
ufs_clusteracct (sb, ucpi, blkno, 1);
fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
fs32_add(sb, &usb1->fs_cstotal.cs_nbfree, 1);
uspi->cs_total.cs_nbfree++;
fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1);
cylno = ufs_cbtocylno (bbase);
fs16_add(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(bbase)), 1);
Expand Down Expand Up @@ -185,7 +185,7 @@ void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
DQUOT_FREE_BLOCK(inode, uspi->s_fpb);

fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
fs32_add(sb, &usb1->fs_cstotal.cs_nbfree, 1);
uspi->cs_total.cs_nbfree++;
fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1);
cylno = ufs_cbtocylno(i);
fs16_add(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(i)), 1);
Expand Down Expand Up @@ -372,7 +372,7 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
/*
* There is not enough space for user on the device
*/
if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(usb1, UFS_MINFREE) <= 0) {
if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) {
unlock_super (sb);
UFSD("EXIT (FAILED)\n");
return 0;
Expand Down Expand Up @@ -418,8 +418,8 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
switch (fs32_to_cpu(sb, usb1->fs_optim)) {
case UFS_OPTSPACE:
request = newcount;
if (uspi->s_minfree < 5 || fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)
> uspi->s_dsize * uspi->s_minfree / (2 * 100) )
if (uspi->s_minfree < 5 || uspi->cs_total.cs_nffree
> uspi->s_dsize * uspi->s_minfree / (2 * 100))
break;
usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME);
break;
Expand All @@ -428,7 +428,7 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,

case UFS_OPTTIME:
request = uspi->s_fpb;
if (fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree) < uspi->s_dsize *
if (uspi->cs_total.cs_nffree < uspi->s_dsize *
(uspi->s_minfree - 2) / 100)
break;
usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME);
Expand Down Expand Up @@ -516,7 +516,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,

fs32_sub(sb, &ucg->cg_cs.cs_nffree, count);
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
fs32_sub(sb, &usb1->fs_cstotal.cs_nffree, count);
uspi->cs_total.cs_nffree -= count;

ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
Expand Down Expand Up @@ -618,7 +618,7 @@ static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
DQUOT_FREE_BLOCK(inode, i);

fs32_add(sb, &ucg->cg_cs.cs_nffree, i);
fs32_add(sb, &usb1->fs_cstotal.cs_nffree, i);
uspi->cs_total.cs_nffree += i;
fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, i);
fs32_add(sb, &ucg->cg_frsum[i], 1);
goto succed;
Expand All @@ -635,7 +635,7 @@ static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
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);
uspi->cs_total.cs_nffree -= count;
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
fs32_sub(sb, &ucg->cg_frsum[allocsize], 1);

Expand Down Expand Up @@ -703,7 +703,7 @@ static unsigned ufs_alloccg_block (struct inode * inode,
}

fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1);
fs32_sub(sb, &usb1->fs_cstotal.cs_nbfree, 1);
uspi->cs_total.cs_nbfree--;
fs32_sub(sb, &UFS_SB(sb)->fs_cs(ucpi->c_cgx).cs_nbfree, 1);
cylno = ufs_cbtocylno(result);
fs16_sub(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(result)), 1);
Expand Down
8 changes: 4 additions & 4 deletions fs/ufs/ialloc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -103,12 +103,12 @@ void ufs_free_inode (struct inode * inode)
if (ino < ucpi->c_irotor)
ucpi->c_irotor = ino;
fs32_add(sb, &ucg->cg_cs.cs_nifree, 1);
fs32_add(sb, &usb1->fs_cstotal.cs_nifree, 1);
uspi->cs_total.cs_nifree++;
fs32_add(sb, &UFS_SB(sb)->fs_cs(cg).cs_nifree, 1);

if (is_directory) {
fs32_sub(sb, &ucg->cg_cs.cs_ndir, 1);
fs32_sub(sb, &usb1->fs_cstotal.cs_ndir, 1);
uspi->cs_total.cs_ndir--;
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cg).cs_ndir, 1);
}
}
Expand Down Expand Up @@ -228,12 +228,12 @@ struct inode * ufs_new_inode(struct inode * dir, int mode)
}

fs32_sub(sb, &ucg->cg_cs.cs_nifree, 1);
fs32_sub(sb, &usb1->fs_cstotal.cs_nifree, 1);
uspi->cs_total.cs_nifree--;
fs32_sub(sb, &sbi->fs_cs(cg).cs_nifree, 1);

if (S_ISDIR(mode)) {
fs32_add(sb, &ucg->cg_cs.cs_ndir, 1);
fs32_add(sb, &usb1->fs_cstotal.cs_ndir, 1);
uspi->cs_total.cs_ndir++;
fs32_add(sb, &sbi->fs_cs(cg).cs_ndir, 1);
}

Expand Down
140 changes: 103 additions & 37 deletions fs/ufs/super.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -381,24 +381,57 @@ static int ufs_parse_options (char * options, unsigned * mount_options)
}

/*
* Read on-disk structures associated with cylinder groups
* Diffrent types of UFS hold fs_cstotal in different
* places, and use diffrent data structure for it.
* To make things simplier we just copy fs_cstotal to ufs_sb_private_info
*/
static int ufs_read_cylinder_structures (struct super_block *sb)
static void ufs_setup_cstotal(struct super_block *sb)
{
struct ufs_sb_info *sbi = UFS_SB(sb);
struct ufs_sb_private_info *uspi = sbi->s_uspi;
struct ufs_super_block_first *usb1;
struct ufs_super_block_second *usb2;
struct ufs_super_block_third *usb3;
unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;

UFSD("ENTER, mtype=%u\n", mtype);
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
usb3 = ubh_get_usb_third(uspi);

if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
(usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
mtype == UFS_MOUNT_UFSTYPE_UFS2) {
/*we have statistic in different place, then usual*/
uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
} else {
uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
}
UFSD("EXIT\n");
}

/*
* Read on-disk structures associated with cylinder groups
*/
static int ufs_read_cylinder_structures(struct super_block *sb)
{
struct ufs_sb_info *sbi = UFS_SB(sb);
struct ufs_sb_private_info *uspi = sbi->s_uspi;
unsigned flags = sbi->s_flags;
struct ufs_buffer_head * ubh;
unsigned char * base, * space;
unsigned size, blks, i;
unsigned flags = 0;
struct ufs_super_block_third *usb3;

UFSD("ENTER\n");

usb3 = ubh_get_usb_third(uspi);

flags = UFS_SB(sb)->s_flags;

usb3 = ubh_get_usb_third(uspi);
/*
* Read cs structures from (usually) first data block
* on the device.
Expand Down Expand Up @@ -475,21 +508,64 @@ static int ufs_read_cylinder_structures (struct super_block *sb)
}

/*
* Put on-disk structures associated with cylinder groups and
* write them back to disk
* Sync our internal copy of fs_cstotal with disk
*/
static void ufs_put_cylinder_structures (struct super_block *sb)
static void ufs_put_cstotal(struct super_block *sb)
{
struct ufs_sb_info * sbi = UFS_SB(sb);
struct ufs_sb_private_info * uspi;
unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct ufs_super_block_first *usb1;
struct ufs_super_block_second *usb2;
struct ufs_super_block_third *usb3;

UFSD("ENTER\n");
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
usb3 = ubh_get_usb_third(uspi);

if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
(usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
mtype == UFS_MOUNT_UFSTYPE_UFS2) {
/*we have statistic in different place, then usual*/
usb2->fs_un.fs_u2.cs_ndir =
cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
usb2->fs_un.fs_u2.cs_nbfree =
cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
usb3->fs_un1.fs_u2.cs_nifree =
cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
usb3->fs_un1.fs_u2.cs_nffree =
cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
} else {
usb1->fs_cstotal.cs_ndir =
cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
usb1->fs_cstotal.cs_nbfree =
cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
usb1->fs_cstotal.cs_nifree =
cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
usb1->fs_cstotal.cs_nffree =
cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
}
ubh_mark_buffer_dirty(USPI_UBH(uspi));
UFSD("EXIT\n");
}

/**
* ufs_put_super_internal() - put on-disk intrenal structures
* @sb: pointer to super_block structure
* Put on-disk structures associated with cylinder groups
* and write them back to disk, also update cs_total on disk
*/
static void ufs_put_super_internal(struct super_block *sb)
{
struct ufs_sb_info *sbi = UFS_SB(sb);
struct ufs_sb_private_info *uspi = sbi->s_uspi;
struct ufs_buffer_head * ubh;
unsigned char * base, * space;
unsigned blks, size, i;


UFSD("ENTER\n");

uspi = sbi->s_uspi;

ufs_put_cstotal(sb);
size = uspi->s_cssize;
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
base = space = (char*) sbi->s_csp;
Expand Down Expand Up @@ -524,7 +600,6 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
struct ufs_super_block_first * usb1;
struct ufs_super_block_second * usb2;
struct ufs_super_block_third * usb3;
struct ufs_super_block *usb;
struct ufs_buffer_head * ubh;
struct inode *inode;
unsigned block_size, super_block_size;
Expand Down Expand Up @@ -728,8 +803,6 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
usb3 = ubh_get_usb_third(uspi);
usb = (struct ufs_super_block *)
((struct ufs_buffer_head *)uspi)->bh[0]->b_data ;

/*
* Check ufs magic number
Expand Down Expand Up @@ -850,8 +923,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_flags |= MS_RDONLY;
break;
}
}
else {
} else {
printk("ufs_read_super: fs needs fsck\n");
sb->s_flags |= MS_RDONLY;
}
Expand Down Expand Up @@ -952,7 +1024,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
if (!sb->s_root)
goto dalloc_failed;


ufs_setup_cstotal(sb);
/*
* Read cylinder group structures
*/
Expand Down Expand Up @@ -1000,7 +1072,7 @@ static void ufs_write_super(struct super_block *sb)
|| (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
ufs_set_fs_state(sb, usb1, usb3,
UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ufs_put_cstotal(sb);
}
sb->s_dirt = 0;
UFSD("EXIT\n");
Expand All @@ -1014,7 +1086,7 @@ static void ufs_put_super(struct super_block *sb)
UFSD("ENTER\n");

if (!(sb->s_flags & MS_RDONLY))
ufs_put_cylinder_structures (sb);
ufs_put_super_internal(sb);

ubh_brelse_uspi (sbi->s_uspi);
kfree (sbi->s_uspi);
Expand Down Expand Up @@ -1049,8 +1121,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
return -EINVAL;
if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
new_mount_opt |= ufstype;
}
else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
printk("ufstype can't be changed during remount\n");
return -EINVAL;
}
Expand All @@ -1064,7 +1135,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
* fs was mouted as rw, remounting ro
*/
if (*mount_flags & MS_RDONLY) {
ufs_put_cylinder_structures(sb);
ufs_put_super_internal(sb);
usb1->fs_time = cpu_to_fs32(sb, get_seconds());
if ((flags & UFS_ST_MASK) == UFS_ST_SUN
|| (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
Expand All @@ -1073,11 +1144,10 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
ubh_mark_buffer_dirty (USPI_UBH(uspi));
sb->s_dirt = 0;
sb->s_flags |= MS_RDONLY;
}
} else {
/*
* fs was mounted as ro, remounting rw
*/
else {
#ifndef CONFIG_UFS_FS_WRITE
printk("ufs was compiled with read-only support, "
"can't be mounted as read-write\n");
Expand All @@ -1089,7 +1159,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
printk("this ufstype is read-only supported\n");
return -EINVAL;
}
if (!ufs_read_cylinder_structures (sb)) {
if (!ufs_read_cylinder_structures(sb)) {
printk("failed during remounting\n");
return -EPERM;
}
Expand Down Expand Up @@ -1118,17 +1188,13 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
buf->f_type = UFS2_MAGIC;
buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
buf->f_bfree = ufs_blkstofrags(
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)) +
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
buf->f_ffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
} else {
buf->f_type = UFS_MAGIC;
buf->f_blocks = uspi->s_dsize;
buf->f_bfree = ufs_blkstofrags(fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)) +
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
buf->f_ffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
}
buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
uspi->cs_total.cs_nffree;
buf->f_ffree = uspi->cs_total.cs_nifree;
buf->f_bsize = sb->s_blocksize;
buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
Expand Down
10 changes: 7 additions & 3 deletions fs/ufs/util.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -306,9 +306,13 @@ static inline void *get_usb_offset(struct ufs_sb_private_info *uspi,
* Determine the number of available frags given a
* percentage to hold in reserve.
*/
#define ufs_freespace(usb, percentreserved) \
(ufs_blkstofrags(fs32_to_cpu(sb, (usb)->fs_cstotal.cs_nbfree)) + \
fs32_to_cpu(sb, (usb)->fs_cstotal.cs_nffree) - (uspi->s_dsize * (percentreserved) / 100))
static inline u64
ufs_freespace(struct ufs_sb_private_info *uspi, int percentreserved)
{
return ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
uspi->cs_total.cs_nffree -
(uspi->s_dsize * (percentreserved) / 100);
}

/*
* Macros to access cylinder group array structures
Expand Down
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