Skip to content

L
linux
Commit 1b156290 authored by Brian Gerst's avatar Brian Gerst Committed by Linus Torvalds
Browse files
Options

[PATCH] struct super_block cleanup - ext2 

Abstract access to ext2_sb_info.
parent bc846ba4
Show whitespace changes
Inline Side-by-side
Showing with 168 additions and 155 deletions
fs/ext2/balloc.c
View file @ 1b156290
......@@ -41,7 +41,7 @@ struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
unsigned long group_desc;
unsigned long offset;
struct ext2_group_desc * desc;
struct ext2_sb_info *sbi = &sb->u.ext2_sb;
struct ext2_sb_info *sbi = EXT2_SB(sb);
if (block_group >= sbi->s_groups_count) {
ext2_error (sb, "ext2_get_group_desc",
......@@ -110,7 +110,7 @@ static struct buffer_head *read_block_bitmap(struct super_block *sb,
static struct buffer_head *load_block_bitmap(struct super_block * sb,
unsigned int block_group)
{
struct ext2_sb_info *sbi = &sb->u.ext2_sb;
struct ext2_sb_info *sbi = EXT2_SB(sb);
int i, slot = 0;
struct buffer_head *bh = sbi->s_block_bitmap[0];
......@@ -249,7 +249,7 @@ void ext2_free_blocks (struct inode * inode, unsigned long block,
unsigned freed = 0, group_freed;
lock_super (sb);
es = sb->u.ext2_sb.s_es;
es = EXT2_SB(sb)->s_es;
if (block < le32_to_cpu(es->s_first_data_block) ||
(block + count) > le32_to_cpu(es->s_blocks_count)) {
ext2_error (sb, "ext2_free_blocks",
......@@ -285,9 +285,9 @@ void ext2_free_blocks (struct inode * inode, unsigned long block,
if (in_range (le32_to_cpu(desc->bg_block_bitmap), block, count) ||
in_range (le32_to_cpu(desc->bg_inode_bitmap), block, count) ||
in_range (block, le32_to_cpu(desc->bg_inode_table),
sb->u.ext2_sb.s_itb_per_group) ||
EXT2_SB(sb)->s_itb_per_group) ||
in_range (block + count - 1, le32_to_cpu(desc->bg_inode_table),
sb->u.ext2_sb.s_itb_per_group))
EXT2_SB(sb)->s_itb_per_group))
ext2_error (sb, "ext2_free_blocks",
"Freeing blocks in system zones - "
"Block = %lu, count = %lu",
......@@ -552,11 +552,11 @@ unsigned long ext2_count_free_blocks (struct super_block * sb)
int i;
lock_super (sb);
es = sb->u.ext2_sb.s_es;
es = EXT2_SB(sb)->s_es;
desc_count = 0;
bitmap_count = 0;
desc = NULL;
for (i = 0; i < sb->u.ext2_sb.s_groups_count; i++) {
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
struct buffer_head *bh;
desc = ext2_get_group_desc (sb, i, NULL);
if (!desc)
......@@ -576,7 +576,7 @@ unsigned long ext2_count_free_blocks (struct super_block * sb)
unlock_super (sb);
return bitmap_count;
#else
return le32_to_cpu(sb->u.ext2_sb.s_es->s_free_blocks_count);
return le32_to_cpu(EXT2_SB(sb)->s_es->s_free_blocks_count);
#endif
}
......@@ -584,7 +584,7 @@ static inline int block_in_use (unsigned long block,
struct super_block * sb,
unsigned char * map)
{
return ext2_test_bit ((block - le32_to_cpu(sb->u.ext2_sb.s_es->s_first_data_block)) %
return ext2_test_bit ((block - le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block)) %
EXT2_BLOCKS_PER_GROUP(sb), map);
}
......@@ -651,11 +651,11 @@ void ext2_check_blocks_bitmap (struct super_block * sb)
struct ext2_group_desc * desc;
int i;
es = sb->u.ext2_sb.s_es;
es = EXT2_SB(sb)->s_es;
desc_count = 0;
bitmap_count = 0;
desc = NULL;
for (i = 0; i < sb->u.ext2_sb.s_groups_count; i++) {
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
desc = ext2_get_group_desc (sb, i, NULL);
if (!desc)
continue;
......@@ -685,7 +685,7 @@ void ext2_check_blocks_bitmap (struct super_block * sb)
"Inode bitmap for group %d is marked free",
i);
for (j = 0; j < sb->u.ext2_sb.s_itb_per_group; j++)
for (j = 0; j < EXT2_SB(sb)->s_itb_per_group; j++)
if (!block_in_use (le32_to_cpu(desc->bg_inode_table) + j, sb, bh->b_data))
ext2_error (sb, "ext2_check_blocks_bitmap",
"Block #%ld of the inode table in "
......
fs/ext2/dir.c
View file @ 1b156290
......@@ -68,7 +68,7 @@ static void ext2_check_page(struct page *page)
struct super_block *sb = dir->i_sb;
unsigned chunk_size = ext2_chunk_size(dir);
char *kaddr = page_address(page);
u32 max_inumber = le32_to_cpu(sb->u.ext2_sb.s_es->s_inodes_count);
u32 max_inumber = le32_to_cpu(EXT2_SB(sb)->s_es->s_inodes_count);
unsigned offs, rec_len;
unsigned limit = PAGE_CACHE_SIZE;
ext2_dirent *p;
......
fs/ext2/ialloc.c
View file @ 1b156290
......@@ -77,7 +77,7 @@ static struct buffer_head *load_inode_bitmap (struct super_block * sb,
unsigned int block_group)
{
int i, slot = 0;
struct ext2_sb_info *sbi = &sb->u.ext2_sb;
struct ext2_sb_info *sbi = EXT2_SB(sb);
struct buffer_head *bh = sbi->s_inode_bitmap[0];
if (block_group >= sbi->s_groups_count)
......@@ -171,7 +171,7 @@ void ext2_free_inode (struct inode * inode)
}
lock_super (sb);
es = sb->u.ext2_sb.s_es;
es = EXT2_SB(sb)->s_es;
is_directory = S_ISDIR(inode->i_mode);
/* Do this BEFORE marking the inode not in use or returning an error */
......@@ -205,7 +205,7 @@ void ext2_free_inode (struct inode * inode)
mark_buffer_dirty(bh2);
es->s_free_inodes_count =
cpu_to_le32(le32_to_cpu(es->s_free_inodes_count) + 1);
mark_buffer_dirty(sb->u.ext2_sb.s_sbh);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
}
mark_buffer_dirty(bh);
if (sb->s_flags & MS_SYNCHRONOUS) {
......@@ -230,8 +230,8 @@ void ext2_free_inode (struct inode * inode)
static int find_group_dir(struct super_block *sb, int parent_group)
{
struct ext2_super_block * es = sb->u.ext2_sb.s_es;
int ngroups = sb->u.ext2_sb.s_groups_count;
struct ext2_super_block * es = EXT2_SB(sb)->s_es;
int ngroups = EXT2_SB(sb)->s_groups_count;
int avefreei = le32_to_cpu(es->s_free_inodes_count) / ngroups;
struct ext2_group_desc *desc, *best_desc = NULL;
struct buffer_head *bh, *best_bh = NULL;
......@@ -263,7 +263,7 @@ static int find_group_dir(struct super_block *sb, int parent_group)
static int find_group_other(struct super_block *sb, int parent_group)
{
int ngroups = sb->u.ext2_sb.s_groups_count;
int ngroups = EXT2_SB(sb)->s_groups_count;
struct ext2_group_desc *desc;
struct buffer_head *bh;
int group, i;
......@@ -330,7 +330,7 @@ struct inode * ext2_new_inode(struct inode * dir, int mode)
ei = EXT2_I(inode);
lock_super (sb);
es = sb->u.ext2_sb.s_es;
es = EXT2_SB(sb)->s_es;
repeat:
if (S_ISDIR(mode))
group = find_group_dir(sb, EXT2_I(dir)->i_block_group);
......@@ -369,7 +369,7 @@ struct inode * ext2_new_inode(struct inode * dir, int mode)
es->s_free_inodes_count =
cpu_to_le32(le32_to_cpu(es->s_free_inodes_count) - 1);
mark_buffer_dirty(sb->u.ext2_sb.s_sbh);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
sb->s_dirt = 1;
inode->i_uid = current->fsuid;
if (test_opt (sb, GRPID))
......@@ -405,7 +405,7 @@ struct inode * ext2_new_inode(struct inode * dir, int mode)
ei->i_dir_start_lookup = 0;
if (ei->i_flags & EXT2_SYNC_FL)
inode->i_flags |= S_SYNC;
inode->i_generation = sb->u.ext2_sb.s_next_generation++;
inode->i_generation = EXT2_SB(sb)->s_next_generation++;
insert_inode_hash(inode);
mark_inode_dirty(inode);
......@@ -457,8 +457,8 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
int i;
lock_super (sb);
es = sb->u.ext2_sb.s_es;
for (i = 0; i < sb->u.ext2_sb.s_groups_count; i++) {
es = EXT2_SB(sb)->s_es;
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
struct ext2_group_desc *desc = ext2_get_group_desc (sb, i, NULL);
struct buffer_head *bh;
unsigned x;
......@@ -480,7 +480,7 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
unlock_super (sb);
return desc_count;
#else
return le32_to_cpu(sb->u.ext2_sb.s_es->s_free_inodes_count);
return le32_to_cpu(EXT2_SB(sb)->s_es->s_free_inodes_count);
#endif
}
......@@ -488,11 +488,11 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
/* Called at mount-time, super-block is locked */
void ext2_check_inodes_bitmap (struct super_block * sb)
{
struct ext2_super_block * es = sb->u.ext2_sb.s_es;
struct ext2_super_block * es = EXT2_SB(sb)->s_es;
unsigned long desc_count = 0, bitmap_count = 0;
int i;
for (i = 0; i < sb->u.ext2_sb.s_groups_count; i++) {
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
struct ext2_group_desc *desc = ext2_get_group_desc(sb, i, NULL);
struct buffer_head *bh;
unsigned x;
......
fs/ext2/inode.c
View file @ 1b156290
......@@ -303,7 +303,7 @@ static inline unsigned long ext2_find_near(struct inode *inode, Indirect *ind)
* the same cylinder group then.
*/
return (ei->i_block_group * EXT2_BLOCKS_PER_GROUP(inode->i_sb)) +
le32_to_cpu(inode->i_sb->u.ext2_sb.s_es->s_first_data_block);
le32_to_cpu(EXT2_SB(inode->i_sb)->s_es->s_first_data_block);
}
/**
......@@ -886,7 +886,7 @@ static struct ext2_inode *ext2_get_inode(struct super_block *sb, ino_t ino,
*p = NULL;
if ((ino != EXT2_ROOT_INO && ino != EXT2_ACL_IDX_INO &&
ino != EXT2_ACL_DATA_INO && ino < EXT2_FIRST_INO(sb)) ||
ino > le32_to_cpu(sb->u.ext2_sb.s_es->s_inodes_count))
ino > le32_to_cpu(EXT2_SB(sb)->s_es->s_inodes_count))
goto Einval;
block_group = (ino - 1) / EXT2_INODES_PER_GROUP(sb);
......
fs/ext2/super.c
View file @ 1b156290
......@@ -37,10 +37,11 @@ void ext2_error (struct super_block * sb, const char * function,
const char * fmt, ...)
{
va_list args;
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
struct ext2_sb_info *sbi = EXT2_SB(sb);
struct ext2_super_block *es = sbi->s_es;
if (!(sb->s_flags & MS_RDONLY)) {
sb->u.ext2_sb.s_mount_state |= EXT2_ERROR_FS;
sbi->s_mount_state |= EXT2_ERROR_FS;
es->s_state =
cpu_to_le16(le16_to_cpu(es->s_state) | EXT2_ERROR_FS);
ext2_sync_super(sb, es);
......@@ -49,14 +50,14 @@ void ext2_error (struct super_block * sb, const char * function,
vsprintf (error_buf, fmt, args);
va_end (args);
if (test_opt (sb, ERRORS_PANIC) ||
(le16_to_cpu(sb->u.ext2_sb.s_es->s_errors) == EXT2_ERRORS_PANIC &&
(le16_to_cpu(sbi->s_es->s_errors) == EXT2_ERRORS_PANIC &&
!test_opt (sb, ERRORS_CONT) && !test_opt (sb, ERRORS_RO)))
panic ("EXT2-fs panic (device %s): %s: %s\n",
sb->s_id, function, error_buf);
printk (KERN_CRIT "EXT2-fs error (device %s): %s: %s\n",
sb->s_id, function, error_buf);
if (test_opt (sb, ERRORS_RO) ||
(le16_to_cpu(sb->u.ext2_sb.s_es->s_errors) == EXT2_ERRORS_RO &&
(le16_to_cpu(sbi->s_es->s_errors) == EXT2_ERRORS_RO &&
!test_opt (sb, ERRORS_CONT) && !test_opt (sb, ERRORS_PANIC))) {
printk ("Remounting filesystem read-only\n");
sb->s_flags |= MS_RDONLY;
......@@ -67,12 +68,13 @@ NORET_TYPE void ext2_panic (struct super_block * sb, const char * function,
const char * fmt, ...)
{
va_list args;
struct ext2_sb_info *sbi = EXT2_SB(sb);
if (!(sb->s_flags & MS_RDONLY)) {
sb->u.ext2_sb.s_mount_state |= EXT2_ERROR_FS;
sb->u.ext2_sb.s_es->s_state =
cpu_to_le16(le16_to_cpu(sb->u.ext2_sb.s_es->s_state) | EXT2_ERROR_FS);
mark_buffer_dirty(sb->u.ext2_sb.s_sbh);
sbi->s_mount_state |= EXT2_ERROR_FS;
sbi->s_es->s_state =
cpu_to_le16(le16_to_cpu(sbi->s_es->s_state) | EXT2_ERROR_FS);
mark_buffer_dirty(sbi->s_sbh);
sb->s_dirt = 1;
}
va_start (args, fmt);
......@@ -124,25 +126,26 @@ void ext2_put_super (struct super_block * sb)
{
int db_count;
int i;
struct ext2_sb_info *sbi = EXT2_SB(sb);
if (!(sb->s_flags & MS_RDONLY)) {
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
struct ext2_super_block *es = sbi->s_es;
es->s_state = le16_to_cpu(EXT2_SB(sb)->s_mount_state);
es->s_state = le16_to_cpu(sbi->s_mount_state);
ext2_sync_super(sb, es);
}
db_count = EXT2_SB(sb)->s_gdb_count;
db_count = sbi->s_gdb_count;
for (i = 0; i < db_count; i++)
if (sb->u.ext2_sb.s_group_desc[i])
brelse (sb->u.ext2_sb.s_group_desc[i]);
kfree(sb->u.ext2_sb.s_group_desc);
if (sbi->s_group_desc[i])
brelse (sbi->s_group_desc[i]);
kfree(sbi->s_group_desc);
for (i = 0; i < EXT2_MAX_GROUP_LOADED; i++)
if (sb->u.ext2_sb.s_inode_bitmap[i])
brelse (sb->u.ext2_sb.s_inode_bitmap[i]);
if (sbi->s_inode_bitmap[i])
brelse (sbi->s_inode_bitmap[i]);
for (i = 0; i < EXT2_MAX_GROUP_LOADED; i++)
if (sb->u.ext2_sb.s_block_bitmap[i])
brelse (sb->u.ext2_sb.s_block_bitmap[i]);
brelse (sb->u.ext2_sb.s_sbh);
if (sbi->s_block_bitmap[i])
brelse (sbi->s_block_bitmap[i]);
brelse (sbi->s_sbh);
return;
}
......@@ -333,6 +336,8 @@ static int ext2_setup_super (struct super_block * sb,
int read_only)
{
int res = 0;
struct ext2_sb_info *sbi = EXT2_SB(sb);
if (le32_to_cpu(es->s_rev_level) > EXT2_MAX_SUPP_REV) {
printk ("EXT2-fs warning: revision level too high, "
"forcing read-only mode\n");
......@@ -340,10 +345,10 @@ static int ext2_setup_super (struct super_block * sb,
}
if (read_only)
return res;
if (!(sb->u.ext2_sb.s_mount_state & EXT2_VALID_FS))
if (!(sbi->s_mount_state & EXT2_VALID_FS))
printk ("EXT2-fs warning: mounting unchecked fs, "
"running e2fsck is recommended\n");
else if ((sb->u.ext2_sb.s_mount_state & EXT2_ERROR_FS))
else if ((sbi->s_mount_state & EXT2_ERROR_FS))
printk ("EXT2-fs warning: mounting fs with errors, "
"running e2fsck is recommended\n");
else if ((__s16) le16_to_cpu(es->s_max_mnt_count) >= 0 &&
......@@ -363,11 +368,11 @@ static int ext2_setup_super (struct super_block * sb,
printk ("[EXT II FS %s, %s, bs=%lu, fs=%lu, gc=%lu, "
"bpg=%lu, ipg=%lu, mo=%04lx]\n",
EXT2FS_VERSION, EXT2FS_DATE, sb->s_blocksize,
sb->u.ext2_sb.s_frag_size,
sb->u.ext2_sb.s_groups_count,
sbi->s_frag_size,
sbi->s_groups_count,
EXT2_BLOCKS_PER_GROUP(sb),
EXT2_INODES_PER_GROUP(sb),
sb->u.ext2_sb.s_mount_opt);
sbi->s_mount_opt);
#ifdef CONFIG_EXT2_CHECK
if (test_opt (sb, CHECK)) {
ext2_check_blocks_bitmap (sb);
......@@ -381,15 +386,16 @@ static int ext2_check_descriptors (struct super_block * sb)
{
int i;
int desc_block = 0;
unsigned long block = le32_to_cpu(sb->u.ext2_sb.s_es->s_first_data_block);
struct ext2_sb_info *sbi = EXT2_SB(sb);
unsigned long block = le32_to_cpu(sbi->s_es->s_first_data_block);
struct ext2_group_desc * gdp = NULL;
ext2_debug ("Checking group descriptors");
for (i = 0; i < sb->u.ext2_sb.s_groups_count; i++)
for (i = 0; i < sbi->s_groups_count; i++)
{
if ((i % EXT2_DESC_PER_BLOCK(sb)) == 0)
gdp = (struct ext2_group_desc *) sb->u.ext2_sb.s_group_desc[desc_block++]->b_data;
gdp = (struct ext2_group_desc *) sbi->s_group_desc[desc_block++]->b_data;
if (le32_to_cpu(gdp->bg_block_bitmap) < block ||
le32_to_cpu(gdp->bg_block_bitmap) >= block + EXT2_BLOCKS_PER_GROUP(sb))
{
......@@ -409,7 +415,7 @@ static int ext2_check_descriptors (struct super_block * sb)
return 0;
}
if (le32_to_cpu(gdp->bg_inode_table) < block ||
le32_to_cpu(gdp->bg_inode_table) + sb->u.ext2_sb.s_itb_per_group >=
le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group >=
block + EXT2_BLOCKS_PER_GROUP(sb))
{
ext2_error (sb, "ext2_check_descriptors",
......@@ -446,6 +452,7 @@ static loff_t ext2_max_size(int bits)
static int ext2_fill_super(struct super_block *sb, void *data, int silent)
{
struct buffer_head * bh;
struct ext2_sb_info * sbi;
struct ext2_super_block * es;
unsigned long sb_block = 1;
unsigned short resuid = EXT2_DEF_RESUID;
......@@ -456,6 +463,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
int db_count;
int i, j;
sbi = EXT2_SB(sb);
/*
* See what the current blocksize for the device is, and
* use that as the blocksize. Otherwise (or if the blocksize
......@@ -464,9 +472,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
* sectorsize that is larger than the default.
*/
sb->u.ext2_sb.s_mount_opt = 0;
sbi->s_mount_opt = 0;
if (!parse_options ((char *) data, &sb_block, &resuid, &resgid,
&sb->u.ext2_sb.s_mount_opt))
&sbi->s_mount_opt))
return -EINVAL;
blocksize = sb_min_blocksize(sb, BLOCK_SIZE);
......@@ -494,7 +502,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
* some ext2 macro-instructions depend on its value
*/
es = (struct ext2_super_block *) (((char *)bh->b_data) + offset);
sb->u.ext2_sb.s_es = es;
sbi->s_es = es;
sb->s_magic = le16_to_cpu(es->s_magic);
if (sb->s_magic != EXT2_SUPER_MAGIC) {
if (!silent)
......@@ -526,7 +534,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sb->s_id, i);
goto failed_mount;
}
blocksize = BLOCK_SIZE << le32_to_cpu(EXT2_SB(sb)->s_es->s_log_block_size);
blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
/* If the blocksize doesn't match, re-read the thing.. */
if (sb->s_blocksize != blocksize) {
brelse(bh);
......@@ -545,7 +553,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount;
}
es = (struct ext2_super_block *) (((char *)bh->b_data) + offset);
sb->u.ext2_sb.s_es = es;
sbi->s_es = es;
if (es->s_magic != le16_to_cpu(EXT2_SUPER_MAGIC)) {
printk ("EXT2-fs: Magic mismatch, very weird !\n");
goto failed_mount;
......@@ -555,46 +563,46 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sb->s_maxbytes = ext2_max_size(sb->s_blocksize_bits);
if (le32_to_cpu(es->s_rev_level) == EXT2_GOOD_OLD_REV) {
sb->u.ext2_sb.s_inode_size = EXT2_GOOD_OLD_INODE_SIZE;
sb->u.ext2_sb.s_first_ino = EXT2_GOOD_OLD_FIRST_INO;
sbi->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE;
sbi->s_first_ino = EXT2_GOOD_OLD_FIRST_INO;
} else {
sb->u.ext2_sb.s_inode_size = le16_to_cpu(es->s_inode_size);
sb->u.ext2_sb.s_first_ino = le32_to_cpu(es->s_first_ino);
if (sb->u.ext2_sb.s_inode_size != EXT2_GOOD_OLD_INODE_SIZE) {
sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
if (sbi->s_inode_size != EXT2_GOOD_OLD_INODE_SIZE) {
printk ("EXT2-fs: unsupported inode size: %d\n",
sb->u.ext2_sb.s_inode_size);
sbi->s_inode_size);
goto failed_mount;
}
}
sb->u.ext2_sb.s_frag_size = EXT2_MIN_FRAG_SIZE <<
sbi->s_frag_size = EXT2_MIN_FRAG_SIZE <<
le32_to_cpu(es->s_log_frag_size);
if (sb->u.ext2_sb.s_frag_size)
sb->u.ext2_sb.s_frags_per_block = sb->s_blocksize /
sb->u.ext2_sb.s_frag_size;
if (sbi->s_frag_size)
sbi->s_frags_per_block = sb->s_blocksize /
sbi->s_frag_size;
else
sb->s_magic = 0;
sb->u.ext2_sb.s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group);
sb->u.ext2_sb.s_frags_per_group = le32_to_cpu(es->s_frags_per_group);
sb->u.ext2_sb.s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
sb->u.ext2_sb.s_inodes_per_block = sb->s_blocksize /
sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group);
sbi->s_frags_per_group = le32_to_cpu(es->s_frags_per_group);
sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
sbi->s_inodes_per_block = sb->s_blocksize /
EXT2_INODE_SIZE(sb);
sb->u.ext2_sb.s_itb_per_group = sb->u.ext2_sb.s_inodes_per_group /
sb->u.ext2_sb.s_inodes_per_block;
sb->u.ext2_sb.s_desc_per_block = sb->s_blocksize /
sbi->s_itb_per_group = sbi->s_inodes_per_group /
sbi->s_inodes_per_block;
sbi->s_desc_per_block = sb->s_blocksize /
sizeof (struct ext2_group_desc);
sb->u.ext2_sb.s_sbh = bh;
sbi->s_sbh = bh;
if (resuid != EXT2_DEF_RESUID)
sb->u.ext2_sb.s_resuid = resuid;
sbi->s_resuid = resuid;
else
sb->u.ext2_sb.s_resuid = le16_to_cpu(es->s_def_resuid);
sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
if (resgid != EXT2_DEF_RESGID)
sb->u.ext2_sb.s_resgid = resgid;
sbi->s_resgid = resgid;
else
sb->u.ext2_sb.s_resgid = le16_to_cpu(es->s_def_resgid);
sb->u.ext2_sb.s_mount_state = le16_to_cpu(es->s_state);
sb->u.ext2_sb.s_addr_per_block_bits =
sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
sbi->s_mount_state = le16_to_cpu(es->s_state);
sbi->s_addr_per_block_bits =
log2 (EXT2_ADDR_PER_BLOCK(sb));
sb->u.ext2_sb.s_desc_per_block_bits =
sbi->s_desc_per_block_bits =
log2 (EXT2_DESC_PER_BLOCK(sb));
if (sb->s_magic != EXT2_SUPER_MAGIC) {
if (!silent)
......@@ -610,45 +618,45 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount;
}
if (sb->s_blocksize != sb->u.ext2_sb.s_frag_size) {
if (sb->s_blocksize != sbi->s_frag_size) {
printk ("EXT2-fs: fragsize %lu != blocksize %lu (not supported yet)\n",
sb->u.ext2_sb.s_frag_size, sb->s_blocksize);
sbi->s_frag_size, sb->s_blocksize);
goto failed_mount;
}
if (sb->u.ext2_sb.s_blocks_per_group > sb->s_blocksize * 8) {
if (sbi->s_blocks_per_group > sb->s_blocksize * 8) {
printk ("EXT2-fs: #blocks per group too big: %lu\n",
sb->u.ext2_sb.s_blocks_per_group);
sbi->s_blocks_per_group);
goto failed_mount;
}
if (sb->u.ext2_sb.s_frags_per_group > sb->s_blocksize * 8) {
if (sbi->s_frags_per_group > sb->s_blocksize * 8) {
printk ("EXT2-fs: #fragments per group too big: %lu\n",
sb->u.ext2_sb.s_frags_per_group);
sbi->s_frags_per_group);
goto failed_mount;
}
if (sb->u.ext2_sb.s_inodes_per_group > sb->s_blocksize * 8) {
if (sbi->s_inodes_per_group > sb->s_blocksize * 8) {
printk ("EXT2-fs: #inodes per group too big: %lu\n",
sb->u.ext2_sb.s_inodes_per_group);
sbi->s_inodes_per_group);
goto failed_mount;
}
sb->u.ext2_sb.s_groups_count = (le32_to_cpu(es->s_blocks_count) -
sbi->s_groups_count = (le32_to_cpu(es->s_blocks_count) -
le32_to_cpu(es->s_first_data_block) +
EXT2_BLOCKS_PER_GROUP(sb) - 1) /
EXT2_BLOCKS_PER_GROUP(sb);
db_count = (sb->u.ext2_sb.s_groups_count + EXT2_DESC_PER_BLOCK(sb) - 1) /
db_count = (sbi->s_groups_count + EXT2_DESC_PER_BLOCK(sb) - 1) /
EXT2_DESC_PER_BLOCK(sb);
sb->u.ext2_sb.s_group_desc = kmalloc (db_count * sizeof (struct buffer_head *), GFP_KERNEL);
if (sb->u.ext2_sb.s_group_desc == NULL) {
sbi->s_group_desc = kmalloc (db_count * sizeof (struct buffer_head *), GFP_KERNEL);
if (sbi->s_group_desc == NULL) {
printk ("EXT2-fs: not enough memory\n");
goto failed_mount;
}
for (i = 0; i < db_count; i++) {
sb->u.ext2_sb.s_group_desc[i] = sb_bread(sb, logic_sb_block + i + 1);
if (!sb->u.ext2_sb.s_group_desc[i]) {
sbi->s_group_desc[i] = sb_bread(sb, logic_sb_block + i + 1);
if (!sbi->s_group_desc[i]) {
for (j = 0; j < i; j++)
brelse (sb->u.ext2_sb.s_group_desc[j]);
kfree(sb->u.ext2_sb.s_group_desc);
brelse (sbi->s_group_desc[j]);
kfree(sbi->s_group_desc);
printk ("EXT2-fs: unable to read group descriptors\n");
goto failed_mount;
}
......@@ -659,15 +667,15 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount2;
}
for (i = 0; i < EXT2_MAX_GROUP_LOADED; i++) {
sb->u.ext2_sb.s_inode_bitmap_number[i] = 0;
sb->u.ext2_sb.s_inode_bitmap[i] = NULL;
sb->u.ext2_sb.s_block_bitmap_number[i] = 0;
sb->u.ext2_sb.s_block_bitmap[i] = NULL;
}
sb->u.ext2_sb.s_loaded_inode_bitmaps = 0;
sb->u.ext2_sb.s_loaded_block_bitmaps = 0;
sb->u.ext2_sb.s_gdb_count = db_count;
get_random_bytes(&sb->u.ext2_sb.s_next_generation, sizeof(u32));
sbi->s_inode_bitmap_number[i] = 0;
sbi->s_inode_bitmap[i] = NULL;
sbi->s_block_bitmap_number[i] = 0;
sbi->s_block_bitmap[i] = NULL;
}
sbi->s_loaded_inode_bitmaps = 0;
sbi->s_loaded_block_bitmaps = 0;
sbi->s_gdb_count = db_count;
get_random_bytes(&sbi->s_next_generation, sizeof(u32));
/*
* set up enough so that it can read an inode
*/
......@@ -687,8 +695,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
return 0;
failed_mount2:
for (i = 0; i < db_count; i++)
brelse(sb->u.ext2_sb.s_group_desc[i]);
kfree(sb->u.ext2_sb.s_group_desc);
brelse(sbi->s_group_desc[i]);
kfree(sbi->s_group_desc);
failed_mount:
brelse(bh);
return -EINVAL;
......@@ -698,7 +706,7 @@ static void ext2_commit_super (struct super_block * sb,
struct ext2_super_block * es)
{
es->s_wtime = cpu_to_le32(CURRENT_TIME);
mark_buffer_dirty(sb->u.ext2_sb.s_sbh);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
sb->s_dirt = 0;
}
......@@ -727,7 +735,7 @@ void ext2_write_super (struct super_block * sb)
struct ext2_super_block * es;
if (!(sb->s_flags & MS_RDONLY)) {
es = sb->u.ext2_sb.s_es;
es = EXT2_SB(sb)->s_es;
if (le16_to_cpu(es->s_state) & EXT2_VALID_FS) {
ext2_debug ("setting valid to 0\n");
......@@ -743,35 +751,36 @@ void ext2_write_super (struct super_block * sb)
int ext2_remount (struct super_block * sb, int * flags, char * data)
{
struct ext2_sb_info * sbi = EXT2_SB(sb);
struct ext2_super_block * es;
unsigned short resuid = sb->u.ext2_sb.s_resuid;
unsigned short resgid = sb->u.ext2_sb.s_resgid;
unsigned short resuid = sbi->s_resuid;
unsigned short resgid = sbi->s_resgid;
unsigned long new_mount_opt;
unsigned long tmp;
/*
* Allow the "check" option to be passed as a remount option.
*/
new_mount_opt = sb->u.ext2_sb.s_mount_opt;
new_mount_opt = sbi->s_mount_opt;
if (!parse_options (data, &tmp, &resuid, &resgid,
&new_mount_opt))
return -EINVAL;
sb->u.ext2_sb.s_mount_opt = new_mount_opt;
sb->u.ext2_sb.s_resuid = resuid;
sb->u.ext2_sb.s_resgid = resgid;
es = sb->u.ext2_sb.s_es;
sbi->s_mount_opt = new_mount_opt;
sbi->s_resuid = resuid;
sbi->s_resgid = resgid;
es = sbi->s_es;
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
if (*flags & MS_RDONLY) {
if (le16_to_cpu(es->s_state) & EXT2_VALID_FS ||
!(sb->u.ext2_sb.s_mount_state & EXT2_VALID_FS))
!(sbi->s_mount_state & EXT2_VALID_FS))
return 0;
/*
* OK, we are remounting a valid rw partition rdonly, so set
* the rdonly flag and then mark the partition as valid again.
*/
es->s_state = cpu_to_le16(sb->u.ext2_sb.s_mount_state);
es->s_state = cpu_to_le16(sbi->s_mount_state);
es->s_mtime = cpu_to_le32(CURRENT_TIME);
} else {
int ret;
......@@ -787,7 +796,7 @@ int ext2_remount (struct super_block * sb, int * flags, char * data)
* store the current valid flag. (It may have been changed
* by e2fsck since we originally mounted the partition.)
*/
sb->u.ext2_sb.s_mount_state = le16_to_cpu(es->s_state);
sbi->s_mount_state = le16_to_cpu(es->s_state);
if (!ext2_setup_super (sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
}
......@@ -797,6 +806,7 @@ int ext2_remount (struct super_block * sb, int * flags, char * data)
int ext2_statfs (struct super_block * sb, struct statfs * buf)
{
struct ext2_sb_info *sbi = EXT2_SB(sb);
unsigned long overhead;
int i;
......@@ -811,14 +821,14 @@ int ext2_statfs (struct super_block * sb, struct statfs * buf)
* All of the blocks before first_data_block are
* overhead
*/
overhead = le32_to_cpu(sb->u.ext2_sb.s_es->s_first_data_block);
overhead = le32_to_cpu(sbi->s_es->s_first_data_block);
/*
* Add the overhead attributed to the superblock and
* block group descriptors. If the sparse superblocks
* feature is turned on, then not all groups have this.
*/
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++)
for (i = 0; i < sbi->s_groups_count; i++)
overhead += ext2_bg_has_super(sb, i) +
ext2_bg_num_gdb(sb, i);
......@@ -826,18 +836,18 @@ int ext2_statfs (struct super_block * sb, struct statfs * buf)
* Every block group has an inode bitmap, a block
* bitmap, and an inode table.
*/
overhead += (sb->u.ext2_sb.s_groups_count *
(2 + sb->u.ext2_sb.s_itb_per_group));
overhead += (sbi->s_groups_count *
(2 + sbi->s_itb_per_group));
}
buf->f_type = EXT2_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = le32_to_cpu(sb->u.ext2_sb.s_es->s_blocks_count) - overhead;
buf->f_blocks = le32_to_cpu(sbi->s_es->s_blocks_count) - overhead;
buf->f_bfree = ext2_count_free_blocks (sb);
buf->f_bavail = buf->f_bfree - le32_to_cpu(sb->u.ext2_sb.s_es->s_r_blocks_count);
if (buf->f_bfree < le32_to_cpu(sb->u.ext2_sb.s_es->s_r_blocks_count))
buf->f_bavail = buf->f_bfree - le32_to_cpu(sbi->s_es->s_r_blocks_count);
if (buf->f_bfree < le32_to_cpu(sbi->s_es->s_r_blocks_count))
buf->f_bavail = 0;
buf->f_files = le32_to_cpu(sb->u.ext2_sb.s_es->s_inodes_count);
buf->f_files = le32_to_cpu(sbi->s_es->s_inodes_count);
buf->f_ffree = ext2_count_free_inodes (sb);
buf->f_namelen = EXT2_NAME_LEN;
return 0;
......
fs/intermezzo/journal_ext2.c
View file @ 1b156290
......@@ -27,8 +27,8 @@
static loff_t presto_e2_freespace(struct presto_cache *cache,
struct super_block *sb)
{
unsigned long freebl = le32_to_cpu(sb->u.ext2_sb.s_es->s_free_blocks_count);
unsigned long avail = freebl - le32_to_cpu(sb->u.ext2_sb.s_es->s_r_blocks_count);
unsigned long freebl = le32_to_cpu(EXT2_SB(sb)->s_es->s_free_blocks_count);
unsigned long avail = freebl - le32_to_cpu(EXT2_SB(sb)->s_es->s_r_blocks_count);
return (avail << EXT2_BLOCK_SIZE_BITS(sb));
}
......@@ -41,7 +41,7 @@ static void *presto_e2_trans_start(struct presto_file_set *fset, struct inode *i
strcmp(fset->fset_cache->cache_type, "ext2"))
return NULL;
avail_kmlblocks = inode->i_sb->u.ext2_sb.s_es->s_free_blocks_count;
avail_kmlblocks = EXT2_SB(inode->i_sb)->s_es->s_free_blocks_count;
if ( avail_kmlblocks < 3 ) {
return ERR_PTR(-ENOSPC);
......
include/linux/ext2_fs.h
View file @ 1b156290
......@@ -70,6 +70,18 @@
*/
#define EXT2_SUPER_MAGIC 0xEF53
#ifdef __KERNEL__
static inline struct ext2_sb_info *EXT2_SB(struct super_block *sb)
{
return &sb->u.ext2_sb;
}
#else
/* Assume that user mode programs are passing in an ext2fs superblock, not
* a kernel struct super_block. This will allow us to call the feature-test
* macros from user land. */
#define EXT2_SB(sb) (sb)
#endif
/*
* Maximal count of links to a file
*/
......@@ -94,9 +106,9 @@
# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
#endif
#ifdef __KERNEL__
#define EXT2_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_addr_per_block_bits)
#define EXT2_INODE_SIZE(s) ((s)->u.ext2_sb.s_inode_size)
#define EXT2_FIRST_INO(s) ((s)->u.ext2_sb.s_first_ino)
#define EXT2_ADDR_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_addr_per_block_bits)
#define EXT2_INODE_SIZE(s) (EXT2_SB(s)->s_inode_size)
#define EXT2_FIRST_INO(s) (EXT2_SB(s)->s_first_ino)
#else
#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
EXT2_GOOD_OLD_INODE_SIZE : \
......@@ -113,8 +125,8 @@
#define EXT2_MAX_FRAG_SIZE 4096
#define EXT2_MIN_FRAG_LOG_SIZE 10
#ifdef __KERNEL__
# define EXT2_FRAG_SIZE(s) ((s)->u.ext2_sb.s_frag_size)
# define EXT2_FRAGS_PER_BLOCK(s) ((s)->u.ext2_sb.s_frags_per_block)
# define EXT2_FRAG_SIZE(s) (EXT2_SB(s)->s_frag_size)
# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_SB(s)->s_frags_per_block)
#else
# define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
......@@ -161,10 +173,10 @@ struct ext2_group_desc
* Macro-instructions used to manage group descriptors
*/
#ifdef __KERNEL__
# define EXT2_BLOCKS_PER_GROUP(s) ((s)->u.ext2_sb.s_blocks_per_group)
# define EXT2_DESC_PER_BLOCK(s) ((s)->u.ext2_sb.s_desc_per_block)
# define EXT2_INODES_PER_GROUP(s) ((s)->u.ext2_sb.s_inodes_per_group)
# define EXT2_DESC_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_desc_per_block_bits)
# define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
# define EXT2_DESC_PER_BLOCK(s) (EXT2_SB(s)->s_desc_per_block)
# define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
# define EXT2_DESC_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_desc_per_block_bits)
#else
# define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
# define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
......@@ -317,7 +329,7 @@ struct ext2_inode {
#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
#define test_opt(sb, opt) ((sb)->u.ext2_sb.s_mount_opt & \
#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \
EXT2_MOUNT_##opt)
/*
* Maximal mount counts between two filesystem checks
......@@ -395,15 +407,6 @@ struct ext2_super_block {
__u32 s_reserved[204]; /* Padding to the end of the block */
};
#ifdef __KERNEL__
#define EXT2_SB(sb) (&((sb)->u.ext2_sb))
#else
/* Assume that user mode programs are passing in an ext2fs superblock, not
* a kernel struct super_block. This will allow us to call the feature-test
* macros from user land. */
#define EXT2_SB(sb) (sb)
#endif
/*
* Codes for operating systems
*/
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7