diff options
| -rw-r--r-- | fs/bfs/inode.c | 70 |
1 files changed, 32 insertions, 38 deletions
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index f22a7d3..0499822 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -99,6 +99,24 @@ error: return ERR_PTR(-EIO); } +static struct bfs_inode *find_inode(struct super_block *sb, u16 ino, struct buffer_head **p) +{ + if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(sb)->si_lasti)) { + printf("Bad inode number %s:%08x\n", sb->s_id, ino); + return ERR_PTR(-EIO); + } + + ino -= BFS_ROOT_INO; + + *p = sb_bread(sb, 1 + ino / BFS_INODES_PER_BLOCK); + if (!*p) { + printf("Unable to read inode %s:%08x\n", sb->s_id, ino); + return ERR_PTR(-EIO); + } + + return (struct bfs_inode *)(*p)->b_data + ino % BFS_INODES_PER_BLOCK; +} + static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc) { struct bfs_sb_info *info = BFS_SB(inode->i_sb); @@ -106,28 +124,15 @@ static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc) unsigned long i_sblock; struct bfs_inode *di; struct buffer_head *bh; - int block, off; int err = 0; dprintf("ino=%08x\n", ino); - if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) { - printf("Bad inode number %s:%08x\n", inode->i_sb->s_id, ino); - return -EIO; - } + di = find_inode(inode->i_sb, ino, &bh); + if (IS_ERR(di)) + return PTR_ERR(di); mutex_lock(&info->bfs_lock); - block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1; - bh = sb_bread(inode->i_sb, block); - if (!bh) { - printf("Unable to read inode %s:%08x\n", - inode->i_sb->s_id, ino); - mutex_unlock(&info->bfs_lock); - return -EIO; - } - - off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK; - di = (struct bfs_inode *)bh->b_data + off; if (ino == BFS_ROOT_INO) di->i_vtype = cpu_to_le32(BFS_VDIR); @@ -158,12 +163,11 @@ static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc) return err; } -static void bfs_delete_inode(struct inode *inode) +static void bfs_evict_inode(struct inode *inode) { unsigned long ino = inode->i_ino; struct bfs_inode *di; struct buffer_head *bh; - int block, off; struct super_block *s = inode->i_sb; struct bfs_sb_info *info = BFS_SB(s); struct bfs_inode_info *bi = BFS_I(inode); @@ -171,28 +175,19 @@ static void bfs_delete_inode(struct inode *inode) dprintf("ino=%08lx\n", ino); truncate_inode_pages(&inode->i_data, 0); + invalidate_inode_buffers(inode); + end_writeback(inode); - if ((ino < BFS_ROOT_INO) || (ino > info->si_lasti)) { - printf("invalid ino=%08lx\n", ino); + if (inode->i_nlink) return; - } - - inode->i_size = 0; - inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; - mutex_lock(&info->bfs_lock); - mark_inode_dirty(inode); - block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1; - bh = sb_bread(s, block); - if (!bh) { - printf("Unable to read inode %s:%08lx\n", - inode->i_sb->s_id, ino); - mutex_unlock(&info->bfs_lock); + di = find_inode(s, inode->i_ino, &bh); + if (IS_ERR(di)) return; - } - off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK; - di = (struct bfs_inode *)bh->b_data + off; - memset((void *)di, 0, sizeof(struct bfs_inode)); + + mutex_lock(&info->bfs_lock); + /* clear on-disk inode */ + memset(di, 0, sizeof(struct bfs_inode)); mark_buffer_dirty(bh); brelse(bh); @@ -214,7 +209,6 @@ static void bfs_delete_inode(struct inode *inode) mark_buffer_dirty(info->si_sbh); } mutex_unlock(&info->bfs_lock); - clear_inode(inode); } static int bfs_sync_fs(struct super_block *sb, int wait) @@ -319,7 +313,7 @@ static const struct super_operations bfs_sops = { .alloc_inode = bfs_alloc_inode, .destroy_inode = bfs_destroy_inode, .write_inode = bfs_write_inode, - .delete_inode = bfs_delete_inode, + .evict_inode = bfs_evict_inode, .put_super = bfs_put_super, .write_super = bfs_write_super, .sync_fs = bfs_sync_fs, |
