From bd55597520a2eaa0d71dd7683513a14bfd1bdf5c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 7 Jun 2010 11:35:40 -0400 Subject: convert btrfs to ->evict_inode() NB: do we want btrfs_wait_ordered_range() on eviction of inodes with positive i_nlink on subvolume with zero root_refs? If not, btrfs_evict_inode() can be simplified by unconditionally bailing out in case of i_nlink > 0 in the very beginning... Signed-off-by: Al Viro --- fs/btrfs/ctree.h | 2 +- fs/btrfs/inode.c | 8 ++++++-- fs/btrfs/super.c | 2 +- 3 files changed, 8 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 29c20092847e..394d5422ab6a 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2389,7 +2389,7 @@ unsigned long btrfs_force_ra(struct address_space *mapping, pgoff_t offset, pgoff_t last_index); int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); int btrfs_readpage(struct file *file, struct page *page); -void btrfs_delete_inode(struct inode *inode); +void btrfs_evict_inode(struct inode *inode); void btrfs_put_inode(struct inode *inode); int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); void btrfs_dirty_inode(struct inode *inode); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 95eac0116963..ce02199ec4e5 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3668,7 +3668,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) return err; } -void btrfs_delete_inode(struct inode *inode) +void btrfs_evict_inode(struct inode *inode) { struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(inode)->root; @@ -3676,10 +3676,14 @@ void btrfs_delete_inode(struct inode *inode) int ret; truncate_inode_pages(&inode->i_data, 0); + if (inode->i_nlink && btrfs_root_refs(&root->root_item) != 0) + goto no_delete; + if (is_bad_inode(inode)) { btrfs_orphan_del(NULL, inode); goto no_delete; } + /* do we really want it for ->i_nlink > 0 and zero btrfs_root_refs? */ btrfs_wait_ordered_range(inode, 0, (u64)-1); if (root->fs_info->log_root_recovering) { @@ -3729,7 +3733,7 @@ void btrfs_delete_inode(struct inode *inode) btrfs_end_transaction(trans, root); btrfs_btree_balance_dirty(root, nr); no_delete: - clear_inode(inode); + end_writeback(inode); return; } diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index f2393b390318..1776dbd8dc98 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -797,7 +797,7 @@ static int btrfs_unfreeze(struct super_block *sb) static const struct super_operations btrfs_super_ops = { .drop_inode = btrfs_drop_inode, - .delete_inode = btrfs_delete_inode, + .evict_inode = btrfs_evict_inode, .put_super = btrfs_put_super, .sync_fs = btrfs_sync_fs, .show_options = btrfs_show_options, -- cgit v1.2.3