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-rw-r--r--fs/ufs/super.c140
1 files changed, 103 insertions, 37 deletions
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 3aadbd3167a6..74ef5e9bedff 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -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.
@@ -475,21 +508,64 @@ failed:
}
/*
- * 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;
@@ -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;
@@ -728,8 +803,6 @@ again:
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
@@ -850,8 +923,7 @@ magic_found:
sb->s_flags |= MS_RDONLY;
break;
}
- }
- else {
+ } else {
printk("ufs_read_super: fs needs fsck\n");
sb->s_flags |= MS_RDONLY;
}
@@ -952,7 +1024,7 @@ magic_found:
if (!sb->s_root)
goto dalloc_failed;
-
+ ufs_setup_cstotal(sb);
/*
* Read cylinder group structures
*/
@@ -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");
@@ -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);
@@ -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;
}
@@ -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)
@@ -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");
@@ -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;
}
@@ -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;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 12:20:10 +0000