diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 22:43:38 +1100 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 22:43:38 +1100 |
commit | 8cd226ca3f64f28c8123ebfaa6afe8dc8c18b174 (patch) | |
tree | 6a668a8e899dca090ded0d3b8d6badda8f97d1b0 /fs/ext4/super.c | |
parent | 6b11d8179d1c6e560edc02c40a53b65fde83bf3f (diff) | |
parent | 4019191be7316ed4a39e1c1c2b623baa7dc6c843 (diff) |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (50 commits)
jbd2: sparse pointer use of zero as null
jbd2: Use round-jiffies() function for the "5 second" ext4/jbd2 wakeup
jbd2: Mark jbd2 slabs as SLAB_TEMPORARY
jbd2: add lockdep support
ext4: Use the ext4_ext_actual_len() helper function
ext4: fix uniniatilized extent splitting error
ext4: Check for return value from sb_set_blocksize
ext4: Add stripe= option to /proc/mounts
ext4: Enable the multiblock allocator by default
ext4: Add multi block allocator for ext4
ext4: Add new functions for searching extent tree
ext4: Add ext4_find_next_bit()
ext4: fix up EXT4FS_DEBUG builds
ext4: Fix ext4_show_options to show the correct mount options.
ext4: Add EXT4_IOC_MIGRATE ioctl
ext4: Add inode version support in ext4
vfs: Add 64 bit i_version support
ext4: Add the journal checksum feature
jbd2: jbd2 stats through procfs
ext4: Take read lock during overwrite case.
...
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r-- | fs/ext4/super.c | 379 |
1 files changed, 324 insertions, 55 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1ca0f546c46..055a0cd0168 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -373,6 +373,66 @@ void ext4_update_dynamic_rev(struct super_block *sb) */ } +int ext4_update_compat_feature(handle_t *handle, + struct super_block *sb, __u32 compat) +{ + int err = 0; + if (!EXT4_HAS_COMPAT_FEATURE(sb, compat)) { + err = ext4_journal_get_write_access(handle, + EXT4_SB(sb)->s_sbh); + if (err) + return err; + EXT4_SET_COMPAT_FEATURE(sb, compat); + sb->s_dirt = 1; + handle->h_sync = 1; + BUFFER_TRACE(EXT4_SB(sb)->s_sbh, + "call ext4_journal_dirty_met adata"); + err = ext4_journal_dirty_metadata(handle, + EXT4_SB(sb)->s_sbh); + } + return err; +} + +int ext4_update_rocompat_feature(handle_t *handle, + struct super_block *sb, __u32 rocompat) +{ + int err = 0; + if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, rocompat)) { + err = ext4_journal_get_write_access(handle, + EXT4_SB(sb)->s_sbh); + if (err) + return err; + EXT4_SET_RO_COMPAT_FEATURE(sb, rocompat); + sb->s_dirt = 1; + handle->h_sync = 1; + BUFFER_TRACE(EXT4_SB(sb)->s_sbh, + "call ext4_journal_dirty_met adata"); + err = ext4_journal_dirty_metadata(handle, + EXT4_SB(sb)->s_sbh); + } + return err; +} + +int ext4_update_incompat_feature(handle_t *handle, + struct super_block *sb, __u32 incompat) +{ + int err = 0; + if (!EXT4_HAS_INCOMPAT_FEATURE(sb, incompat)) { + err = ext4_journal_get_write_access(handle, + EXT4_SB(sb)->s_sbh); + if (err) + return err; + EXT4_SET_INCOMPAT_FEATURE(sb, incompat); + sb->s_dirt = 1; + handle->h_sync = 1; + BUFFER_TRACE(EXT4_SB(sb)->s_sbh, + "call ext4_journal_dirty_met adata"); + err = ext4_journal_dirty_metadata(handle, + EXT4_SB(sb)->s_sbh); + } + return err; +} + /* * Open the external journal device */ @@ -443,6 +503,7 @@ static void ext4_put_super (struct super_block * sb) struct ext4_super_block *es = sbi->s_es; int i; + ext4_mb_release(sb); ext4_ext_release(sb); ext4_xattr_put_super(sb); jbd2_journal_destroy(sbi->s_journal); @@ -509,6 +570,8 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei->i_block_alloc_info = NULL; ei->vfs_inode.i_version = 1; memset(&ei->i_cached_extent, 0, sizeof(struct ext4_ext_cache)); + INIT_LIST_HEAD(&ei->i_prealloc_list); + spin_lock_init(&ei->i_prealloc_lock); return &ei->vfs_inode; } @@ -533,7 +596,7 @@ static void init_once(struct kmem_cache *cachep, void *foo) #ifdef CONFIG_EXT4DEV_FS_XATTR init_rwsem(&ei->xattr_sem); #endif - mutex_init(&ei->truncate_mutex); + init_rwsem(&ei->i_data_sem); inode_init_once(&ei->vfs_inode); } @@ -605,18 +668,20 @@ static inline void ext4_show_quota_options(struct seq_file *seq, struct super_bl */ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) { + int def_errors; + unsigned long def_mount_opts; struct super_block *sb = vfs->mnt_sb; struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_super_block *es = sbi->s_es; - unsigned long def_mount_opts; def_mount_opts = le32_to_cpu(es->s_default_mount_opts); + def_errors = le16_to_cpu(es->s_errors); if (sbi->s_sb_block != 1) seq_printf(seq, ",sb=%llu", sbi->s_sb_block); if (test_opt(sb, MINIX_DF)) seq_puts(seq, ",minixdf"); - if (test_opt(sb, GRPID)) + if (test_opt(sb, GRPID) && !(def_mount_opts & EXT4_DEFM_BSDGROUPS)) seq_puts(seq, ",grpid"); if (!test_opt(sb, GRPID) && (def_mount_opts & EXT4_DEFM_BSDGROUPS)) seq_puts(seq, ",nogrpid"); @@ -628,34 +693,33 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) { seq_printf(seq, ",resgid=%u", sbi->s_resgid); } - if (test_opt(sb, ERRORS_CONT)) { - int def_errors = le16_to_cpu(es->s_errors); - + if (test_opt(sb, ERRORS_RO)) { if (def_errors == EXT4_ERRORS_PANIC || - def_errors == EXT4_ERRORS_RO) { - seq_puts(seq, ",errors=continue"); + def_errors == EXT4_ERRORS_CONTINUE) { + seq_puts(seq, ",errors=remount-ro"); } } - if (test_opt(sb, ERRORS_RO)) - seq_puts(seq, ",errors=remount-ro"); - if (test_opt(sb, ERRORS_PANIC)) + if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE) + seq_puts(seq, ",errors=continue"); + if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC) seq_puts(seq, ",errors=panic"); - if (test_opt(sb, NO_UID32)) + if (test_opt(sb, NO_UID32) && !(def_mount_opts & EXT4_DEFM_UID16)) seq_puts(seq, ",nouid32"); - if (test_opt(sb, DEBUG)) + if (test_opt(sb, DEBUG) && !(def_mount_opts & EXT4_DEFM_DEBUG)) seq_puts(seq, ",debug"); if (test_opt(sb, OLDALLOC)) seq_puts(seq, ",oldalloc"); -#ifdef CONFIG_EXT4_FS_XATTR - if (test_opt(sb, XATTR_USER)) +#ifdef CONFIG_EXT4DEV_FS_XATTR + if (test_opt(sb, XATTR_USER) && + !(def_mount_opts & EXT4_DEFM_XATTR_USER)) seq_puts(seq, ",user_xattr"); if (!test_opt(sb, XATTR_USER) && (def_mount_opts & EXT4_DEFM_XATTR_USER)) { seq_puts(seq, ",nouser_xattr"); } #endif -#ifdef CONFIG_EXT4_FS_POSIX_ACL - if (test_opt(sb, POSIX_ACL)) +#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL + if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL)) seq_puts(seq, ",acl"); if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL)) seq_puts(seq, ",noacl"); @@ -672,7 +736,17 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_puts(seq, ",nobh"); if (!test_opt(sb, EXTENTS)) seq_puts(seq, ",noextents"); + if (!test_opt(sb, MBALLOC)) + seq_puts(seq, ",nomballoc"); + if (test_opt(sb, I_VERSION)) + seq_puts(seq, ",i_version"); + if (sbi->s_stripe) + seq_printf(seq, ",stripe=%lu", sbi->s_stripe); + /* + * journal mode get enabled in different ways + * So just print the value even if we didn't specify it + */ if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) seq_puts(seq, ",data=journal"); else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) @@ -681,7 +755,6 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_puts(seq, ",data=writeback"); ext4_show_quota_options(seq, sb); - return 0; } @@ -809,11 +882,13 @@ enum { Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl, Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, Opt_bh, Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev, + Opt_journal_checksum, Opt_journal_async_commit, Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback, Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota, Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota, - Opt_grpquota, Opt_extents, Opt_noextents, + Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version, + Opt_mballoc, Opt_nomballoc, Opt_stripe, }; static match_table_t tokens = { @@ -848,6 +923,8 @@ static match_table_t tokens = { {Opt_journal_update, "journal=update"}, {Opt_journal_inum, "journal=%u"}, {Opt_journal_dev, "journal_dev=%u"}, + {Opt_journal_checksum, "journal_checksum"}, + {Opt_journal_async_commit, "journal_async_commit"}, {Opt_abort, "abort"}, {Opt_data_journal, "data=journal"}, {Opt_data_ordered, "data=ordered"}, @@ -865,6 +942,10 @@ static match_table_t tokens = { {Opt_barrier, "barrier=%u"}, {Opt_extents, "extents"}, {Opt_noextents, "noextents"}, + {Opt_i_version, "i_version"}, + {Opt_mballoc, "mballoc"}, + {Opt_nomballoc, "nomballoc"}, + {Opt_stripe, "stripe=%u"}, {Opt_err, NULL}, {Opt_resize, "resize"}, }; @@ -1035,6 +1116,13 @@ static int parse_options (char *options, struct super_block *sb, return 0; *journal_devnum = option; break; + case Opt_journal_checksum: + set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM); + break; + case Opt_journal_async_commit: + set_opt(sbi->s_mount_opt, JOURNAL_ASYNC_COMMIT); + set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM); + break; case Opt_noload: set_opt (sbi->s_mount_opt, NOLOAD); break; @@ -1203,6 +1291,23 @@ clear_qf_name: case Opt_noextents: clear_opt (sbi->s_mount_opt, EXTENTS); break; + case Opt_i_version: + set_opt(sbi->s_mount_opt, I_VERSION); + sb->s_flags |= MS_I_VERSION; + break; + case Opt_mballoc: + set_opt(sbi->s_mount_opt, MBALLOC); + break; + case Opt_nomballoc: + clear_opt(sbi->s_mount_opt, MBALLOC); + break; + case Opt_stripe: + if (match_int(&args[0], &option)) + return 0; + if (option < 0) + return 0; + sbi->s_stripe = option; + break; default: printk (KERN_ERR "EXT4-fs: Unrecognized mount option \"%s\" " @@ -1364,7 +1469,7 @@ static int ext4_check_descriptors (struct super_block * sb) struct ext4_group_desc * gdp = NULL; int desc_block = 0; int flexbg_flag = 0; - int i; + ext4_group_t i; if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) flexbg_flag = 1; @@ -1386,7 +1491,7 @@ static int ext4_check_descriptors (struct super_block * sb) if (block_bitmap < first_block || block_bitmap > last_block) { ext4_error (sb, "ext4_check_descriptors", - "Block bitmap for group %d" + "Block bitmap for group %lu" " not in group (block %llu)!", i, block_bitmap); return 0; @@ -1395,7 +1500,7 @@ static int ext4_check_descriptors (struct super_block * sb) if (inode_bitmap < first_block || inode_bitmap > last_block) { ext4_error (sb, "ext4_check_descriptors", - "Inode bitmap for group %d" + "Inode bitmap for group %lu" " not in group (block %llu)!", i, inode_bitmap); return 0; @@ -1405,17 +1510,16 @@ static int ext4_check_descriptors (struct super_block * sb) inode_table + sbi->s_itb_per_group - 1 > last_block) { ext4_error (sb, "ext4_check_descriptors", - "Inode table for group %d" + "Inode table for group %lu" " not in group (block %llu)!", i, inode_table); return 0; } if (!ext4_group_desc_csum_verify(sbi, i, gdp)) { ext4_error(sb, __FUNCTION__, - "Checksum for group %d failed (%u!=%u)\n", i, - le16_to_cpu(ext4_group_desc_csum(sbi, i, - gdp)), - le16_to_cpu(gdp->bg_checksum)); + "Checksum for group %lu failed (%u!=%u)\n", + i, le16_to_cpu(ext4_group_desc_csum(sbi, i, + gdp)), le16_to_cpu(gdp->bg_checksum)); return 0; } if (!flexbg_flag) @@ -1429,7 +1533,6 @@ static int ext4_check_descriptors (struct super_block * sb) return 1; } - /* ext4_orphan_cleanup() walks a singly-linked list of inodes (starting at * the superblock) which were deleted from all directories, but held open by * a process at the time of a crash. We walk the list and try to delete these @@ -1542,20 +1645,95 @@ static void ext4_orphan_cleanup (struct super_block * sb, #endif sb->s_flags = s_flags; /* Restore MS_RDONLY status */ } +/* + * Maximal extent format file size. + * Resulting logical blkno at s_maxbytes must fit in our on-disk + * extent format containers, within a sector_t, and within i_blocks + * in the vfs. ext4 inode has 48 bits of i_block in fsblock units, + * so that won't be a limiting factor. + * + * Note, this does *not* consider any metadata overhead for vfs i_blocks. + */ +static loff_t ext4_max_size(int blkbits) +{ + loff_t res; + loff_t upper_limit = MAX_LFS_FILESIZE; + + /* small i_blocks in vfs inode? */ + if (sizeof(blkcnt_t) < sizeof(u64)) { + /* + * CONFIG_LSF is not enabled implies the inode + * i_block represent total blocks in 512 bytes + * 32 == size of vfs inode i_blocks * 8 + */ + upper_limit = (1LL << 32) - 1; + + /* total blocks in file system block size */ + upper_limit >>= (blkbits - 9); + upper_limit <<= blkbits; + } + + /* 32-bit extent-start container, ee_block */ + res = 1LL << 32; + res <<= blkbits; + res -= 1; + + /* Sanity check against vm- & vfs- imposed limits */ + if (res > upper_limit) + res = upper_limit; + + return res; +} /* - * Maximal file size. There is a direct, and {,double-,triple-}indirect - * block limit, and also a limit of (2^32 - 1) 512-byte sectors in i_blocks. - * We need to be 1 filesystem block less than the 2^32 sector limit. + * Maximal bitmap file size. There is a direct, and {,double-,triple-}indirect + * block limit, and also a limit of (2^48 - 1) 512-byte sectors in i_blocks. + * We need to be 1 filesystem block less than the 2^48 sector limit. */ -static loff_t ext4_max_size(int bits) +static loff_t ext4_max_bitmap_size(int bits) { loff_t res = EXT4_NDIR_BLOCKS; - /* This constant is calculated to be the largest file size for a - * dense, 4k-blocksize file such that the total number of + int meta_blocks; + loff_t upper_limit; + /* This is calculated to be the largest file size for a + * dense, bitmapped file such that the total number of * sectors in the file, including data and all indirect blocks, - * does not exceed 2^32. */ - const loff_t upper_limit = 0x1ff7fffd000LL; + * does not exceed 2^48 -1 + * __u32 i_blocks_lo and _u16 i_blocks_high representing the + * total number of 512 bytes blocks of the file + */ + + if (sizeof(blkcnt_t) < sizeof(u64)) { + /* + * CONFIG_LSF is not enabled implies the inode + * i_block represent total blocks in 512 bytes + * 32 == size of vfs inode i_blocks * 8 + */ + upper_limit = (1LL << 32) - 1; + + /* total blocks in file system block size */ + upper_limit >>= (bits - 9); + + } else { + /* + * We use 48 bit ext4_inode i_blocks + * With EXT4_HUGE_FILE_FL set the i_blocks + * represent total number of blocks in + * file system block size + */ + upper_limit = (1LL << 48) - 1; + + } + + /* indirect blocks */ + meta_blocks = 1; + /* double indirect blocks */ + meta_blocks += 1 + (1LL << (bits-2)); + /* tripple indirect blocks */ + meta_blocks += 1 + (1LL << (bits-2)) + (1LL << (2*(bits-2))); + + upper_limit -= meta_blocks; + upper_limit <<= bits; res += 1LL << (bits-2); res += 1LL << (2*(bits-2)); @@ -1563,6 +1741,10 @@ static loff_t ext4_max_size(int bits) res <<= bits; if (res > upper_limit) res = upper_limit; + + if (res > MAX_LFS_FILESIZE) + res = MAX_LFS_FILESIZE; + return res; } @@ -1570,7 +1752,7 @@ static ext4_fsblk_t descriptor_loc(struct super_block *sb, ext4_fsblk_t logical_sb_block, int nr) { struct ext4_sb_info *sbi = EXT4_SB(sb); - unsigned long bg, first_meta_bg; + ext4_group_t bg, first_meta_bg; int has_super = 0; first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg); @@ -1584,8 +1766,39 @@ static ext4_fsblk_t descriptor_loc(struct super_block *sb, return (has_super + ext4_group_first_block_no(sb, bg)); } +/** + * ext4_get_stripe_size: Get the stripe size. + * @sbi: In memory super block info + * + * If we have specified it via mount option, then + * use the mount option value. If the value specified at mount time is + * greater than the blocks per group use the super block value. + * If the super block value is greater than blocks per group return 0. + * Allocator needs it be less than blocks per group. + * + */ +static unsigned long ext4_get_stripe_size(struct ext4_sb_info *sbi) +{ + unsigned long stride = le16_to_cpu(sbi->s_es->s_raid_stride); + unsigned long stripe_width = + le32_to_cpu(sbi->s_es->s_raid_stripe_width); + + if (sbi->s_stripe && sbi->s_stripe <= sbi->s_blocks_per_group) + return sbi->s_stripe; + + if (stripe_width <= sbi->s_blocks_per_group) + return stripe_width; + + if (stride <= sbi->s_blocks_per_group) + return stride; + + return 0; +} static int ext4_fill_super (struct super_block *sb, void *data, int silent) + __releases(kernel_sem) + __acquires(kernel_sem) + { struct buffer_head * bh; struct ext4_super_block *es = NULL; @@ -1599,7 +1812,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) unsigned long def_mount_opts; struct inode *root; int blocksize; - int hblock; int db_count; int i; int needs_recovery; @@ -1624,6 +1836,11 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) goto out_fail; } + if (!sb_set_blocksize(sb, blocksize)) { + printk(KERN_ERR "EXT4-fs: bad blocksize %d.\n", blocksize); + goto out_fail; + } + /* * The ext4 superblock will not be buffer aligned for other than 1kB * block sizes. We need to calculate the offset from buffer start. @@ -1674,10 +1891,10 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_PANIC) set_opt(sbi->s_mount_opt, ERRORS_PANIC); - else if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_RO) - set_opt(sbi->s_mount_opt, ERRORS_RO); - else + else if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_CONTINUE) set_opt(sbi->s_mount_opt, ERRORS_CONT); + else + set_opt(sbi->s_mount_opt, ERRORS_RO); sbi->s_resuid = le16_to_cpu(es->s_def_resuid); sbi->s_resgid = le16_to_cpu(es->s_def_resgid); @@ -1689,6 +1906,11 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) * User -o noextents to turn it off */ set_opt(sbi->s_mount_opt, EXTENTS); + /* + * turn on mballoc feature by default in ext4 filesystem + * User -o nomballoc to turn it off + */ + set_opt(sbi->s_mount_opt, MBALLOC); if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum, NULL, 0)) @@ -1723,6 +1945,19 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) sb->s_id, le32_to_cpu(features)); goto failed_mount; } + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) { + /* + * Large file size enabled file system can only be + * mount if kernel is build with CONFIG_LSF + */ + if (sizeof(root->i_blocks) < sizeof(u64) && + !(sb->s_flags & MS_RDONLY)) { + printk(KERN_ERR "EXT4-fs: %s: Filesystem with huge " + "files cannot be mounted read-write " + "without CONFIG_LSF.\n", sb->s_id); + goto failed_mount; + } + } blocksize = BLOCK_SIZE << le32_to_cpu(es->s_log_block_size); if (blocksize < EXT4_MIN_BLOCK_SIZE || @@ -1733,20 +1968,16 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) goto failed_mount; } - hblock = bdev_hardsect_size(sb->s_bdev); if (sb->s_blocksize != blocksize) { - /* - * Make sure the blocksize for the filesystem is larger - * than the hardware sectorsize for the machine. - */ - if (blocksize < hblock) { - printk(KERN_ERR "EXT4-fs: blocksize %d too small for " - "device blocksize %d.\n", blocksize, hblock); + + /* Validate the filesystem blocksize */ + if (!sb_set_blocksize(sb, blocksize)) { + printk(KERN_ERR "EXT4-fs: bad block size %d.\n", + blocksize); goto failed_mount; } brelse (bh); - sb_set_blocksize(sb, blocksize); logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE; offset = do_div(logical_sb_block, blocksize); bh = sb_bread(sb, logical_sb_block); @@ -1764,6 +1995,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) } } + sbi->s_bitmap_maxbytes = ext4_max_bitmap_size(sb->s_blocksize_bits); sb->s_maxbytes = ext4_max_size(sb->s_blocksize_bits); if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV) { @@ -1838,6 +2070,17 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) if (EXT4_BLOCKS_PER_GROUP(sb) == 0) goto cantfind_ext4; + + /* ensure blocks_count calculation below doesn't sign-extend */ + if (ext4_blocks_count(es) + EXT4_BLOCKS_PER_GROUP(sb) < + le32_to_cpu(es->s_first_data_block) + 1) { + printk(KERN_WARNING "EXT4-fs: bad geometry: block count %llu, " + "first data block %u, blocks per group %lu\n", + ext4_blocks_count(es), + le32_to_cpu(es->s_first_data_block), + EXT4_BLOCKS_PER_GROUP(sb)); + goto failed_mount; + } blocks_count = (ext4_blocks_count(es) - le32_to_cpu(es->s_first_data_block) + EXT4_BLOCKS_PER_GROUP(sb) - 1); @@ -1900,6 +2143,8 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) sbi->s_rsv_window_head.rsv_goal_size = 0; ext4_rsv_window_add(sb, &sbi->s_rsv_window_head); + sbi->s_stripe = ext4_get_stripe_size(sbi); + /* * set up enough so that it can read an inode */ @@ -1944,6 +2189,21 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) goto failed_mount4; } + if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) { + jbd2_journal_set_features(sbi->s_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + } else if (test_opt(sb, JOURNAL_CHECKSUM)) { + jbd2_journal_set_features(sbi->s_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, 0); + jbd2_journal_clear_features(sbi->s_journal, 0, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + } else { + jbd2_journal_clear_features(sbi->s_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + } + /* We have now updated the journal if required, so we can * validate the data journaling mode. */ switch (test_opt(sb, DATA_FLAGS)) { @@ -2044,6 +2304,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) "writeback"); ext4_ext_init(sb); + ext4_mb_init(sb, needs_recovery); lock_kernel(); return 0; @@ -2673,7 +2934,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) if (test_opt(sb, MINIX_DF)) { sbi->s_overhead_last = 0; } else if (sbi->s_blocks_last != ext4_blocks_count(es)) { - unsigned long ngroups = sbi->s_groups_count, i; + ext4_group_t ngroups = sbi->s_groups_count, i; ext4_fsblk_t overhead = 0; smp_rmb(); @@ -2909,7 +3170,7 @@ static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data, size_t len, loff_t off) { struct inode *inode = sb_dqopt(sb)->files[type]; - sector_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb); + ext4_lblk_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb); int err = 0; int offset = off & (sb->s_blocksize - 1); int tocopy; @@ -2947,7 +3208,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off) { struct inode *inode = sb_dqopt(sb)->files[type]; - sector_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb); + ext4_lblk_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb); int err = 0; int offset = off & (sb->s_blocksize - 1); int tocopy; @@ -3002,7 +3263,6 @@ out: i_size_write(inode, off+len-towrite); EXT4_I(inode)->i_disksize = inode->i_size; } - inode->i_version++; inode->i_mtime = inode->i_ctime = CURRENT_TIME; ext4_mark_inode_dirty(handle, inode); mutex_unlock(&inode->i_mutex); @@ -3027,9 +3287,15 @@ static struct file_system_type ext4dev_fs_type = { static int __init init_ext4_fs(void) { - int err = init_ext4_xattr(); + int err; + + err = init_ext4_mballoc(); if (err) return err; + + err = init_ext4_xattr(); + if (err) + goto out2; err = init_inodecache(); if (err) goto out1; @@ -3041,6 +3307,8 @@ out: destroy_inodecache(); out1: exit_ext4_xattr(); +out2: + exit_ext4_mballoc(); return err; } @@ -3049,6 +3317,7 @@ static void __exit exit_ext4_fs(void) unregister_filesystem(&ext4dev_fs_type); destroy_inodecache(); exit_ext4_xattr(); + exit_ext4_mballoc(); } MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others"); |