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Commit 31cd043e authored by Al Viro's avatar Al Viro
Browse files

ufs: beginning of __ufs_truncate_block() massage 



Use ufs_block_to_path() to find the cutoff path in the block pointers' tree.
For now just use the information about the depth (to bypass the fully
preserved subtrees); subsequent commits will use the information about actual
path.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 4e3911f3

fs/ufs/inode.c

+12 −4
Original line number Diff line number Diff line
@@ -1336,14 +1336,22 @@ static void __ufs_truncate_blocks(struct inode *inode) 
	struct ufs_inode_info *ufsi = UFS_I(inode);

	struct super_block *sb = inode->i_sb;

	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;

	unsigned offsets[4];

	int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets);



	mutex_lock(&ufsi->truncate_mutex);

	switch (depth) {

	case 1:

		ufs_trunc_direct(inode);

	case 2:

		ufs_trunc_indirect(inode, UFS_IND_BLOCK,

			   ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK));

	case 3:

		ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,

			    ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK));

	case 4:

		ufs_trunc_tindirect(inode);

	}

	ufsi->i_lastfrag = DIRECT_FRAGMENT;

	mutex_unlock(&ufsi->truncate_mutex);

}