diff options
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 49 |
1 files changed, 37 insertions, 12 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 175b68c..b806e68 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -29,6 +29,7 @@ #include <linux/parser.h> #include <linux/smp_lock.h> #include <linux/buffer_head.h> +#include <linux/exportfs.h> #include <linux/vfs.h> #include <linux/random.h> #include <linux/mount.h> @@ -510,6 +511,14 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) static void ext4_destroy_inode(struct inode *inode) { + if (!list_empty(&(EXT4_I(inode)->i_orphan))) { + printk("EXT4 Inode %p: orphan list check failed!\n", + EXT4_I(inode)); + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 16, 4, + EXT4_I(inode), sizeof(struct ext4_inode_info), + true); + dump_stack(); + } kmem_cache_free(ext4_inode_cachep, EXT4_I(inode)); } @@ -2150,6 +2159,7 @@ static int ext4_create_journal(struct super_block * sb, unsigned int journal_inum) { journal_t *journal; + int err; if (sb->s_flags & MS_RDONLY) { printk(KERN_ERR "EXT4-fs: readonly filesystem when trying to " @@ -2157,13 +2167,15 @@ static int ext4_create_journal(struct super_block * sb, return -EROFS; } - if (!(journal = ext4_get_journal(sb, journal_inum))) + journal = ext4_get_journal(sb, journal_inum); + if (!journal) return -EINVAL; printk(KERN_INFO "EXT4-fs: creating new journal on inode %u\n", journal_inum); - if (jbd2_journal_create(journal)) { + err = jbd2_journal_create(journal); + if (err) { printk(KERN_ERR "EXT4-fs: error creating journal.\n"); jbd2_journal_destroy(journal); return -EIO; @@ -2214,12 +2226,14 @@ static void ext4_mark_recovery_complete(struct super_block * sb, jbd2_journal_lock_updates(journal); jbd2_journal_flush(journal); + lock_super(sb); if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER) && sb->s_flags & MS_RDONLY) { EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); sb->s_dirt = 0; ext4_commit_super(sb, es, 1); } + unlock_super(sb); jbd2_journal_unlock_updates(journal); } @@ -2408,7 +2422,13 @@ static int ext4_remount (struct super_block * sb, int * flags, char * data) (sbi->s_mount_state & EXT4_VALID_FS)) es->s_state = cpu_to_le16(sbi->s_mount_state); + /* + * We have to unlock super so that we can wait for + * transactions. + */ + unlock_super(sb); ext4_mark_recovery_complete(sb, es); + lock_super(sb); } else { __le32 ret; if ((ret = EXT4_HAS_RO_COMPAT_FEATURE(sb, @@ -2481,19 +2501,19 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) struct super_block *sb = dentry->d_sb; struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_super_block *es = sbi->s_es; - ext4_fsblk_t overhead; - int i; u64 fsid; - if (test_opt (sb, MINIX_DF)) - overhead = 0; - else { - unsigned long ngroups; - ngroups = EXT4_SB(sb)->s_groups_count; + if (test_opt(sb, MINIX_DF)) { + sbi->s_overhead_last = 0; + } else if (sbi->s_blocks_last != le32_to_cpu(es->s_blocks_count)) { + unsigned long ngroups = sbi->s_groups_count, i; + ext4_fsblk_t overhead = 0; smp_rmb(); /* - * Compute the overhead (FS structures) + * Compute the overhead (FS structures). This is constant + * for a given filesystem unless the number of block groups + * changes so we cache the previous value until it does. */ /* @@ -2517,18 +2537,23 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) * Every block group has an inode bitmap, a block * bitmap, and an inode table. */ - overhead += (ngroups * (2 + EXT4_SB(sb)->s_itb_per_group)); + overhead += ngroups * (2 + sbi->s_itb_per_group); + sbi->s_overhead_last = overhead; + smp_wmb(); + sbi->s_blocks_last = le32_to_cpu(es->s_blocks_count); } buf->f_type = EXT4_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; - buf->f_blocks = ext4_blocks_count(es) - overhead; + buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last; buf->f_bfree = percpu_counter_sum(&sbi->s_freeblocks_counter); + es->s_free_blocks_count = cpu_to_le32(buf->f_bfree); buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es); if (buf->f_bfree < ext4_r_blocks_count(es)) buf->f_bavail = 0; buf->f_files = le32_to_cpu(es->s_inodes_count); buf->f_ffree = percpu_counter_sum(&sbi->s_freeinodes_counter); + es->s_free_inodes_count = cpu_to_le32(buf->f_ffree); buf->f_namelen = EXT4_NAME_LEN; fsid = le64_to_cpup((void *)es->s_uuid) ^ le64_to_cpup((void *)es->s_uuid + sizeof(u64)); |
