* David S. Miller (davem@caip.rutgers.edu), 1995
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/fs.h>
static const char *ext3_decode_error(struct super_block * sb, int errno,
char nbuf[16]);
static int ext3_remount (struct super_block * sb, int * flags, char * data);
-static int ext3_statfs (struct super_block * sb, struct kstatfs * buf);
+static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf);
static void ext3_unlockfs(struct super_block *sb);
static void ext3_write_super (struct super_block * sb);
static void ext3_write_super_lockfs(struct super_block *sb);
#ifdef CONFIG_EXT3_FS_XATTR
init_rwsem(&ei->xattr_sem);
#endif
- init_MUTEX(&ei->truncate_sem);
+ mutex_init(&ei->truncate_mutex);
inode_init_once(&ei->vfs_inode);
}
}
{
ext3_inode_cachep = kmem_cache_create("ext3_inode_cache",
sizeof(struct ext3_inode_info),
- 0, SLAB_RECLAIM_ACCOUNT,
+ 0, (SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
init_once, NULL);
if (ext3_inode_cachep == NULL)
return -ENOMEM;
{
struct ext3_block_alloc_info *rsv = EXT3_I(inode)->i_block_alloc_info;
#ifdef CONFIG_EXT3_FS_POSIX_ACL
- if (EXT3_I(inode)->i_acl &&
- EXT3_I(inode)->i_acl != EXT3_ACL_NOT_CACHED) {
- posix_acl_release(EXT3_I(inode)->i_acl);
- EXT3_I(inode)->i_acl = EXT3_ACL_NOT_CACHED;
- }
- if (EXT3_I(inode)->i_default_acl &&
- EXT3_I(inode)->i_default_acl != EXT3_ACL_NOT_CACHED) {
- posix_acl_release(EXT3_I(inode)->i_default_acl);
- EXT3_I(inode)->i_default_acl = EXT3_ACL_NOT_CACHED;
- }
+ if (EXT3_I(inode)->i_acl &&
+ EXT3_I(inode)->i_acl != EXT3_ACL_NOT_CACHED) {
+ posix_acl_release(EXT3_I(inode)->i_acl);
+ EXT3_I(inode)->i_acl = EXT3_ACL_NOT_CACHED;
+ }
+ if (EXT3_I(inode)->i_default_acl &&
+ EXT3_I(inode)->i_default_acl != EXT3_ACL_NOT_CACHED) {
+ posix_acl_release(EXT3_I(inode)->i_default_acl);
+ EXT3_I(inode)->i_default_acl = EXT3_ACL_NOT_CACHED;
+ }
#endif
ext3_discard_reservation(inode);
EXT3_I(inode)->i_block_alloc_info = NULL;
- kfree(rsv);
+ if (unlikely(rsv))
+ kfree(rsv);
}
static inline void ext3_show_quota_options(struct seq_file *seq, struct super_block *sb)
Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
Opt_nouid32, Opt_nocheck, Opt_debug, Opt_oldalloc, Opt_orlov,
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
- Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh,
+ Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, Opt_bh,
Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
{Opt_noreservation, "noreservation"},
{Opt_noload, "noload"},
{Opt_nobh, "nobh"},
+ {Opt_bh, "bh"},
{Opt_commit, "commit=%u"},
{Opt_journal_update, "journal=update"},
{Opt_journal_inum, "journal=%u"},
{Opt_resize, "resize"},
};
-static unsigned long get_sb_block(void **data)
+static ext3_fsblk_t get_sb_block(void **data)
{
- unsigned long sb_block;
+ ext3_fsblk_t sb_block;
char *options = (char *) *data;
if (!options || strncmp(options, "sb=", 3) != 0)
return 1; /* Default location */
options += 3;
+ /*todo: use simple_strtoll with >32bit ext3 */
sb_block = simple_strtoul(options, &options, 0);
if (*options && *options != ',') {
printk("EXT3-fs: Invalid sb specification: %s\n",
static int parse_options (char *options, struct super_block *sb,
unsigned long *inum, unsigned long *journal_devnum,
- unsigned long *n_blocks_count, int is_remount)
+ ext3_fsblk_t *n_blocks_count, int is_remount)
{
struct ext3_sb_info *sbi = EXT3_SB(sb);
char * p;
case Opt_nobh:
set_opt(sbi->s_mount_opt, NOBH);
break;
+ case Opt_bh:
+ clear_opt(sbi->s_mount_opt, NOBH);
+ break;
default:
printk (KERN_ERR
"EXT3-fs: Unrecognized mount option \"%s\" "
static int ext3_check_descriptors (struct super_block * sb)
{
struct ext3_sb_info *sbi = EXT3_SB(sb);
- unsigned long block = le32_to_cpu(sbi->s_es->s_first_data_block);
+ ext3_fsblk_t block = le32_to_cpu(sbi->s_es->s_first_data_block);
struct ext3_group_desc * gdp = NULL;
int desc_block = 0;
int i;
return res;
}
-static unsigned long descriptor_loc(struct super_block *sb,
- unsigned long logic_sb_block,
+static ext3_fsblk_t descriptor_loc(struct super_block *sb,
+ ext3_fsblk_t logic_sb_block,
int nr)
{
struct ext3_sb_info *sbi = EXT3_SB(sb);
- unsigned long bg, first_data_block, first_meta_bg;
+ unsigned long bg, first_meta_bg;
int has_super = 0;
- first_data_block = le32_to_cpu(sbi->s_es->s_first_data_block);
first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg);
if (!EXT3_HAS_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_META_BG) ||
bg = sbi->s_desc_per_block * nr;
if (ext3_bg_has_super(sb, bg))
has_super = 1;
- return (first_data_block + has_super + (bg * sbi->s_blocks_per_group));
+ return (has_super + ext3_group_first_block_no(sb, bg));
}
struct buffer_head * bh;
struct ext3_super_block *es = NULL;
struct ext3_sb_info *sbi;
- unsigned long block;
- unsigned long sb_block = get_sb_block(&data);
- unsigned long logic_sb_block;
+ ext3_fsblk_t block;
+ ext3_fsblk_t sb_block = get_sb_block(&data);
+ ext3_fsblk_t logic_sb_block;
unsigned long offset = 0;
unsigned long journal_inum = 0;
unsigned long journal_devnum = 0;
goto failed_mount;
}
+ if (le32_to_cpu(es->s_blocks_count) >
+ (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) {
+ printk(KERN_ERR "EXT3-fs: filesystem on %s:"
+ " too large to mount safely\n", sb->s_id);
+ if (sizeof(sector_t) < 8)
+ printk(KERN_WARNING "EXT3-fs: CONFIG_LBD not "
+ "enabled\n");
+ goto failed_mount;
+ }
+
if (EXT3_BLOCKS_PER_GROUP(sb) == 0)
goto cantfind_ext3;
sbi->s_groups_count = (le32_to_cpu(es->s_blocks_count) -
goto failed_mount;
}
- percpu_counter_init(&sbi->s_freeblocks_counter);
- percpu_counter_init(&sbi->s_freeinodes_counter);
- percpu_counter_init(&sbi->s_dirs_counter);
bgl_lock_init(&sbi->s_blockgroup_lock);
for (i = 0; i < db_count; i++) {
}
}
if (!ext3_check_descriptors (sb)) {
- printk (KERN_ERR "EXT3-fs: group descriptors corrupted !\n");
+ printk(KERN_ERR "EXT3-fs: group descriptors corrupted!\n");
goto failed_mount2;
}
sbi->s_gdb_count = db_count;
get_random_bytes(&sbi->s_next_generation, sizeof(u32));
spin_lock_init(&sbi->s_next_gen_lock);
+
+ percpu_counter_init(&sbi->s_freeblocks_counter,
+ ext3_count_free_blocks(sb));
+ percpu_counter_init(&sbi->s_freeinodes_counter,
+ ext3_count_free_inodes(sb));
+ percpu_counter_init(&sbi->s_dirs_counter,
+ ext3_count_dirs(sb));
+
/* per fileystem reservation list head & lock */
spin_lock_init(&sbi->s_rsv_window_lock);
sbi->s_rsv_window_root = RB_ROOT;
if (!test_opt(sb, NOLOAD) &&
EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
if (ext3_load_journal(sb, es, journal_devnum))
- goto failed_mount2;
+ goto failed_mount3;
} else if (journal_inum) {
if (ext3_create_journal(sb, es, journal_inum))
- goto failed_mount2;
+ goto failed_mount3;
} else {
if (!silent)
printk (KERN_ERR
"ext3: No journal on filesystem on %s\n",
sb->s_id);
- goto failed_mount2;
+ goto failed_mount3;
}
/* We have now updated the journal if required, so we can
(sbi->s_journal, 0, 0, JFS_FEATURE_INCOMPAT_REVOKE)) {
printk(KERN_ERR "EXT3-fs: Journal does not support "
"requested data journaling mode\n");
- goto failed_mount3;
+ goto failed_mount4;
}
default:
break;
}
if (test_opt(sb, NOBH)) {
- if (sb->s_blocksize_bits != PAGE_CACHE_SHIFT) {
- printk(KERN_WARNING "EXT3-fs: Ignoring nobh option "
- "since filesystem blocksize doesn't match "
- "pagesize\n");
- clear_opt(sbi->s_mount_opt, NOBH);
- }
if (!(test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)) {
printk(KERN_WARNING "EXT3-fs: Ignoring nobh option - "
"its supported only with writeback mode\n");
if (!sb->s_root) {
printk(KERN_ERR "EXT3-fs: get root inode failed\n");
iput(root);
- goto failed_mount3;
+ goto failed_mount4;
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
dput(sb->s_root);
sb->s_root = NULL;
printk(KERN_ERR "EXT3-fs: corrupt root inode, run e2fsck\n");
- goto failed_mount3;
+ goto failed_mount4;
}
ext3_setup_super (sb, es, sb->s_flags & MS_RDONLY);
test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA ? "ordered":
"writeback");
- percpu_counter_mod(&sbi->s_freeblocks_counter,
- ext3_count_free_blocks(sb));
- percpu_counter_mod(&sbi->s_freeinodes_counter,
- ext3_count_free_inodes(sb));
- percpu_counter_mod(&sbi->s_dirs_counter,
- ext3_count_dirs(sb));
-
lock_kernel();
return 0;
sb->s_id);
goto failed_mount;
-failed_mount3:
+failed_mount4:
journal_destroy(sbi->s_journal);
+failed_mount3:
+ percpu_counter_destroy(&sbi->s_freeblocks_counter);
+ percpu_counter_destroy(&sbi->s_freeinodes_counter);
+ percpu_counter_destroy(&sbi->s_dirs_counter);
failed_mount2:
for (i = 0; i < db_count; i++)
brelse(sbi->s_group_desc[i]);
{
struct buffer_head * bh;
journal_t *journal;
- int start;
- int len;
+ ext3_fsblk_t start;
+ ext3_fsblk_t len;
int hblock, blocksize;
- unsigned long sb_block;
+ ext3_fsblk_t sb_block;
unsigned long offset;
struct ext3_super_block * es;
struct block_device *bdev;
{
struct ext3_super_block * es;
struct ext3_sb_info *sbi = EXT3_SB(sb);
- unsigned long n_blocks_count = 0;
+ ext3_fsblk_t n_blocks_count = 0;
unsigned long old_sb_flags;
struct ext3_mount_options old_opts;
int err;
return err;
}
-static int ext3_statfs (struct super_block * sb, struct kstatfs * buf)
+static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf)
{
- struct ext3_super_block *es = EXT3_SB(sb)->s_es;
- unsigned long overhead;
+ struct super_block *sb = dentry->d_sb;
+ struct ext3_sb_info *sbi = EXT3_SB(sb);
+ struct ext3_super_block *es = sbi->s_es;
+ ext3_fsblk_t overhead;
int i;
if (test_opt (sb, MINIX_DF))
buf->f_type = EXT3_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = le32_to_cpu(es->s_blocks_count) - overhead;
- buf->f_bfree = ext3_count_free_blocks (sb);
+ buf->f_bfree = percpu_counter_sum(&sbi->s_freeblocks_counter);
buf->f_bavail = buf->f_bfree - le32_to_cpu(es->s_r_blocks_count);
if (buf->f_bfree < le32_to_cpu(es->s_r_blocks_count))
buf->f_bavail = 0;
buf->f_files = le32_to_cpu(es->s_inodes_count);
- buf->f_ffree = ext3_count_free_inodes (sb);
+ buf->f_ffree = percpu_counter_sum(&sbi->s_freeinodes_counter);
buf->f_namelen = EXT3_NAME_LEN;
return 0;
}
* Process 1 Process 2
* ext3_create() quota_sync()
* journal_start() write_dquot()
- * DQUOT_INIT() down(dqio_sem)
- * down(dqio_sem) journal_start()
+ * DQUOT_INIT() down(dqio_mutex)
+ * down(dqio_mutex) journal_start()
*
*/
struct buffer_head *bh;
handle_t *handle = journal_current_handle();
- mutex_lock(&inode->i_mutex);
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
while (towrite > 0) {
tocopy = sb->s_blocksize - offset < towrite ?
sb->s_blocksize - offset : towrite;
#endif
-static struct super_block *ext3_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int ext3_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, ext3_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, ext3_fill_super, mnt);
}
static struct file_system_type ext3_fs_type = {
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