X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fext3%2Fsuper.c;h=ed22106c9023bbd93861d2a4fed3e9beee69f93c;hb=9464c7cf61b9433057924c36e6e02f303a00e768;hp=26425a5f1282d116bedc49a929aa2d3f0e961eeb;hpb=41689045f6a3cbe0550e1d34e9cc20d2e8c432ba;p=linux-2.6.git diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 26425a5f1..ed22106c9 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -16,6 +16,7 @@ * David S. Miller (davem@caip.rutgers.edu), 1995 */ +#include #include #include #include @@ -45,7 +46,7 @@ static int ext3_load_journal(struct super_block *, struct ext3_super_block *, unsigned long journal_devnum); static int ext3_create_journal(struct super_block *, struct ext3_super_block *, - unsigned int); + int); static void ext3_commit_super (struct super_block * sb, struct ext3_super_block * es, int sync); @@ -57,7 +58,7 @@ static int ext3_sync_fs(struct super_block *sb, int wait); 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 dentry * dentry, struct kstatfs * buf); +static int ext3_statfs (struct super_block * sb, 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); @@ -376,7 +377,7 @@ static void dump_orphan_list(struct super_block *sb, struct ext3_sb_info *sbi) list_for_each(l, &sbi->s_orphan) { struct inode *inode = orphan_list_entry(l); printk(KERN_ERR " " - "inode %s:%lu at %p: mode %o, nlink %d, next %d\n", + "inode %s:%ld at %p: mode %o, nlink %d, next %d\n", inode->i_sb->s_id, inode->i_ino, inode, inode->i_mode, inode->i_nlink, NEXT_ORPHAN(inode)); @@ -498,21 +499,20 @@ static void ext3_clear_inode(struct inode *inode) { 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; - if (unlikely(rsv)) - kfree(rsv); + kfree(rsv); } static inline void ext3_show_quota_options(struct seq_file *seq, struct super_block *sb) @@ -554,47 +554,6 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs) return 0; } - -static struct dentry *ext3_get_dentry(struct super_block *sb, void *vobjp) -{ - __u32 *objp = vobjp; - unsigned long ino = objp[0]; - __u32 generation = objp[1]; - struct inode *inode; - struct dentry *result; - - if (ino < EXT3_FIRST_INO(sb) && ino != EXT3_ROOT_INO) - return ERR_PTR(-ESTALE); - if (ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) - return ERR_PTR(-ESTALE); - - /* iget isn't really right if the inode is currently unallocated!! - * - * ext3_read_inode will return a bad_inode if the inode had been - * deleted, so we should be safe. - * - * Currently we don't know the generation for parent directory, so - * a generation of 0 means "accept any" - */ - inode = iget(sb, ino); - if (inode == NULL) - return ERR_PTR(-ENOMEM); - if (is_bad_inode(inode) || - (generation && inode->i_generation != generation)) { - iput(inode); - return ERR_PTR(-ESTALE); - } - /* now to find a dentry. - * If possible, get a well-connected one - */ - result = d_alloc_anon(inode); - if (!result) { - iput(inode); - return ERR_PTR(-ENOMEM); - } - return result; -} - #ifdef CONFIG_QUOTA #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group") #define QTYPE2MOPT(on, t) ((t)==USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA)) @@ -661,6 +620,45 @@ static struct super_operations ext3_sops = { #endif }; +static struct dentry *ext3_get_dentry(struct super_block *sb, void *vobjp) +{ + __u32 *objp = vobjp; + unsigned long ino = objp[0]; + __u32 generation = objp[1]; + struct inode *inode; + struct dentry *result; + + if (ino != EXT3_ROOT_INO && ino < EXT3_FIRST_INO(sb)) + return ERR_PTR(-ESTALE); + if (ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) + return ERR_PTR(-ESTALE); + + /* iget isn't really right if the inode is currently unallocated!! + * ext3_read_inode currently does appropriate checks, but + * it might be "neater" to call ext3_get_inode first and check + * if the inode is valid..... + */ + inode = iget(sb, ino); + if (inode == NULL) + return ERR_PTR(-ENOMEM); + if (is_bad_inode(inode) + || (generation && inode->i_generation != generation) + ) { + /* we didn't find the right inode.. */ + iput(inode); + return ERR_PTR(-ESTALE); + } + /* now to find a dentry. + * If possible, get a well-connected one + */ + result = d_alloc_anon(inode); + if (!result) { + iput(inode); + return ERR_PTR(-ENOMEM); + } + return result; +} + static struct export_operations ext3_export_ops = { .get_parent = ext3_get_parent, .get_dentry = ext3_get_dentry, @@ -671,7 +669,7 @@ enum { 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_bh, + Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, 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, @@ -707,7 +705,6 @@ static match_table_t tokens = { {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"}, @@ -732,15 +729,14 @@ static match_table_t tokens = { {Opt_resize, "resize"}, }; -static ext3_fsblk_t get_sb_block(void **data) +static unsigned long get_sb_block(void **data) { - ext3_fsblk_t sb_block; + unsigned long 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", @@ -754,8 +750,8 @@ static ext3_fsblk_t get_sb_block(void **data) } static int parse_options (char *options, struct super_block *sb, - unsigned int *inum, unsigned long *journal_devnum, - ext3_fsblk_t *n_blocks_count, int is_remount) + unsigned long *inum, unsigned long *journal_devnum, + unsigned long *n_blocks_count, int is_remount) { struct ext3_sb_info *sbi = EXT3_SB(sb); char * p; @@ -1062,9 +1058,6 @@ clear_qf_name: 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\" " @@ -1180,8 +1173,7 @@ static int ext3_setup_super(struct super_block *sb, struct ext3_super_block *es, static int ext3_check_descriptors (struct super_block * sb) { struct ext3_sb_info *sbi = EXT3_SB(sb); - ext3_fsblk_t first_block = le32_to_cpu(sbi->s_es->s_first_data_block); - ext3_fsblk_t last_block; + unsigned long block = le32_to_cpu(sbi->s_es->s_first_data_block); struct ext3_group_desc * gdp = NULL; int desc_block = 0; int i; @@ -1190,17 +1182,12 @@ static int ext3_check_descriptors (struct super_block * sb) for (i = 0; i < sbi->s_groups_count; i++) { - if (i == sbi->s_groups_count - 1) - last_block = le32_to_cpu(sbi->s_es->s_blocks_count) - 1; - else - last_block = first_block + - (EXT3_BLOCKS_PER_GROUP(sb) - 1); - if ((i % EXT3_DESC_PER_BLOCK(sb)) == 0) gdp = (struct ext3_group_desc *) sbi->s_group_desc[desc_block++]->b_data; - if (le32_to_cpu(gdp->bg_block_bitmap) < first_block || - le32_to_cpu(gdp->bg_block_bitmap) > last_block) + if (le32_to_cpu(gdp->bg_block_bitmap) < block || + le32_to_cpu(gdp->bg_block_bitmap) >= + block + EXT3_BLOCKS_PER_GROUP(sb)) { ext3_error (sb, "ext3_check_descriptors", "Block bitmap for group %d" @@ -1209,8 +1196,9 @@ static int ext3_check_descriptors (struct super_block * sb) le32_to_cpu(gdp->bg_block_bitmap)); return 0; } - if (le32_to_cpu(gdp->bg_inode_bitmap) < first_block || - le32_to_cpu(gdp->bg_inode_bitmap) > last_block) + if (le32_to_cpu(gdp->bg_inode_bitmap) < block || + le32_to_cpu(gdp->bg_inode_bitmap) >= + block + EXT3_BLOCKS_PER_GROUP(sb)) { ext3_error (sb, "ext3_check_descriptors", "Inode bitmap for group %d" @@ -1219,9 +1207,9 @@ static int ext3_check_descriptors (struct super_block * sb) le32_to_cpu(gdp->bg_inode_bitmap)); return 0; } - if (le32_to_cpu(gdp->bg_inode_table) < first_block || - le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group > - last_block) + if (le32_to_cpu(gdp->bg_inode_table) < block || + le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group >= + block + EXT3_BLOCKS_PER_GROUP(sb)) { ext3_error (sb, "ext3_check_descriptors", "Inode table for group %d" @@ -1230,7 +1218,7 @@ static int ext3_check_descriptors (struct super_block * sb) le32_to_cpu(gdp->bg_inode_table)); return 0; } - first_block += EXT3_BLOCKS_PER_GROUP(sb); + block += EXT3_BLOCKS_PER_GROUP(sb); gdp++; } @@ -1312,17 +1300,17 @@ static void ext3_orphan_cleanup (struct super_block * sb, DQUOT_INIT(inode); if (inode->i_nlink) { printk(KERN_DEBUG - "%s: truncating inode %lu to %Ld bytes\n", + "%s: truncating inode %ld to %Ld bytes\n", __FUNCTION__, inode->i_ino, inode->i_size); - jbd_debug(2, "truncating inode %lu to %Ld bytes\n", + jbd_debug(2, "truncating inode %ld to %Ld bytes\n", inode->i_ino, inode->i_size); ext3_truncate(inode); nr_truncates++; } else { printk(KERN_DEBUG - "%s: deleting unreferenced inode %lu\n", + "%s: deleting unreferenced inode %ld\n", __FUNCTION__, inode->i_ino); - jbd_debug(2, "deleting unreferenced inode %lu\n", + jbd_debug(2, "deleting unreferenced inode %ld\n", inode->i_ino); nr_orphans++; } @@ -1372,14 +1360,15 @@ static loff_t ext3_max_size(int bits) return res; } -static ext3_fsblk_t descriptor_loc(struct super_block *sb, - ext3_fsblk_t logic_sb_block, +static unsigned long descriptor_loc(struct super_block *sb, + unsigned long logic_sb_block, int nr) { struct ext3_sb_info *sbi = EXT3_SB(sb); - unsigned long bg, first_meta_bg; + unsigned long bg, first_data_block, 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) || @@ -1388,7 +1377,7 @@ static ext3_fsblk_t descriptor_loc(struct super_block *sb, bg = sbi->s_desc_per_block * nr; if (ext3_bg_has_super(sb, bg)) has_super = 1; - return (has_super + ext3_group_first_block_no(sb, bg)); + return (first_data_block + has_super + (bg * sbi->s_blocks_per_group)); } @@ -1397,11 +1386,11 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) struct buffer_head * bh; struct ext3_super_block *es = NULL; struct ext3_sb_info *sbi; - ext3_fsblk_t block; - ext3_fsblk_t sb_block = get_sb_block(&data); - ext3_fsblk_t logic_sb_block; + unsigned long block; + unsigned long sb_block = get_sb_block(&data); + unsigned long logic_sb_block; unsigned long offset = 0; - unsigned int journal_inum = 0; + unsigned long journal_inum = 0; unsigned long journal_devnum = 0; unsigned long def_mount_opts; struct inode *root; @@ -1624,21 +1613,12 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) 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) - - le32_to_cpu(es->s_first_data_block) - 1) - / EXT3_BLOCKS_PER_GROUP(sb)) + 1; + sbi->s_groups_count = (le32_to_cpu(es->s_blocks_count) - + le32_to_cpu(es->s_first_data_block) + + EXT3_BLOCKS_PER_GROUP(sb) - 1) / + EXT3_BLOCKS_PER_GROUP(sb); db_count = (sbi->s_groups_count + EXT3_DESC_PER_BLOCK(sb) - 1) / EXT3_DESC_PER_BLOCK(sb); sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *), @@ -1648,6 +1628,9 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) 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++) { @@ -1661,20 +1644,12 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) } } 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; @@ -1713,16 +1688,16 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) 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_mount3; + goto failed_mount2; } else if (journal_inum) { if (ext3_create_journal(sb, es, journal_inum)) - goto failed_mount3; + goto failed_mount2; } else { if (!silent) printk (KERN_ERR "ext3: No journal on filesystem on %s\n", sb->s_id); - goto failed_mount3; + goto failed_mount2; } /* We have now updated the journal if required, so we can @@ -1745,7 +1720,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) (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_mount4; + goto failed_mount3; } default: break; @@ -1768,13 +1743,13 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) if (!sb->s_root) { printk(KERN_ERR "EXT3-fs: get root inode failed\n"); iput(root); - goto failed_mount4; + goto failed_mount3; } 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_mount4; + goto failed_mount3; } ext3_setup_super (sb, es, sb->s_flags & MS_RDONLY); @@ -1797,6 +1772,13 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) 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; @@ -1806,12 +1788,8 @@ cantfind_ext3: sb->s_id); goto failed_mount; -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); + journal_destroy(sbi->s_journal); failed_mount2: for (i = 0; i < db_count; i++) brelse(sbi->s_group_desc[i]); @@ -1853,8 +1831,7 @@ static void ext3_init_journal_params(struct super_block *sb, journal_t *journal) spin_unlock(&journal->j_state_lock); } -static journal_t *ext3_get_journal(struct super_block *sb, - unsigned int journal_inum) +static journal_t *ext3_get_journal(struct super_block *sb, int journal_inum) { struct inode *journal_inode; journal_t *journal; @@ -1899,10 +1876,10 @@ static journal_t *ext3_get_dev_journal(struct super_block *sb, { struct buffer_head * bh; journal_t *journal; - ext3_fsblk_t start; - ext3_fsblk_t len; + int start; + int len; int hblock, blocksize; - ext3_fsblk_t sb_block; + unsigned long sb_block; unsigned long offset; struct ext3_super_block * es; struct block_device *bdev; @@ -1989,7 +1966,7 @@ static int ext3_load_journal(struct super_block *sb, unsigned long journal_devnum) { journal_t *journal; - unsigned int journal_inum = le32_to_cpu(es->s_journal_inum); + int journal_inum = le32_to_cpu(es->s_journal_inum); dev_t journal_dev; int err = 0; int really_read_only; @@ -2075,7 +2052,7 @@ static int ext3_load_journal(struct super_block *sb, static int ext3_create_journal(struct super_block * sb, struct ext3_super_block * es, - unsigned int journal_inum) + int journal_inum) { journal_t *journal; @@ -2088,7 +2065,7 @@ static int ext3_create_journal(struct super_block * sb, if (!(journal = ext3_get_journal(sb, journal_inum))) return -EINVAL; - printk(KERN_INFO "EXT3-fs: creating new journal on inode %u\n", + printk(KERN_INFO "EXT3-fs: creating new journal on inode %d\n", journal_inum); if (journal_create(journal)) { @@ -2275,7 +2252,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) { struct ext3_super_block * es; struct ext3_sb_info *sbi = EXT3_SB(sb); - ext3_fsblk_t n_blocks_count = 0; + unsigned long n_blocks_count = 0; unsigned long old_sb_flags; struct ext3_mount_options old_opts; int err; @@ -2396,12 +2373,11 @@ restore_opts: return err; } -static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf) +static int ext3_statfs (struct super_block * sb, struct kstatfs * buf) { - 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; + unsigned long overhead; int i; if (test_opt (sb, MINIX_DF)) @@ -2676,7 +2652,7 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type, struct buffer_head *bh; handle_t *handle = journal_current_handle(); - mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); + mutex_lock(&inode->i_mutex); while (towrite > 0) { tocopy = sb->s_blocksize - offset < towrite ? sb->s_blocksize - offset : towrite; @@ -2725,10 +2701,10 @@ out: #endif -static int ext3_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, struct vfsmount *mnt) +static struct super_block *ext3_get_sb(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) { - return get_sb_bdev(fs_type, flags, dev_name, data, ext3_fill_super, mnt); + return get_sb_bdev(fs_type, flags, dev_name, data, ext3_fill_super); } static struct file_system_type ext3_fs_type = {