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: Al Viro <viro@zeniv.linux.org.uk>
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4e3911f3d7
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31cd043e1a
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@ -1336,14 +1336,22 @@ static void __ufs_truncate_blocks(struct inode *inode)
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struct ufs_inode_info *ufsi = UFS_I(inode);
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struct super_block *sb = inode->i_sb;
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struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
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unsigned offsets[4];
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int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets);
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mutex_lock(&ufsi->truncate_mutex);
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ufs_trunc_direct(inode);
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ufs_trunc_indirect(inode, UFS_IND_BLOCK,
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switch (depth) {
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case 1:
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ufs_trunc_direct(inode);
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case 2:
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ufs_trunc_indirect(inode, UFS_IND_BLOCK,
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ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK));
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ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
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case 3:
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ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
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ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK));
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ufs_trunc_tindirect(inode);
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case 4:
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ufs_trunc_tindirect(inode);
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}
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ufsi->i_lastfrag = DIRECT_FRAGMENT;
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mutex_unlock(&ufsi->truncate_mutex);
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}
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