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| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-06-07 11:35:40 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-08-09 16:48:22 -0400 |
| commit | bd55597520a2eaa0d71dd7683513a14bfd1bdf5c (patch) | |
| tree | b99685fe2d9b6c9ad87b7d3e6a8fc47a5ac248ce | |
| parent | d5c1515cf374951f07e5bf97b6ff3718d3401b6f (diff) | |
| download | talos-obmc-linux-bd55597520a2eaa0d71dd7683513a14bfd1bdf5c.tar.gz talos-obmc-linux-bd55597520a2eaa0d71dd7683513a14bfd1bdf5c.zip | |
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 <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/btrfs/ctree.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 8 | ||||
| -rw-r--r-- | 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, |
