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Commit 42432739 authored by Al Viro's avatar Al Viro
Browse files

__ufs_trunc_blocks(): turn the part after switch into a loop 



... and turn the switch into if (), since all cases with
depth != 1 have just become identical.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent ef3a315d

fs/ufs/inode.c

+10 −25
Original line number Diff line number Diff line
@@ -1222,6 +1222,7 @@ static void __ufs_truncate_blocks(struct inode *inode) 
	unsigned offsets[4];

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

	int depth2;

	unsigned i;



	if (!depth)

		return;
@@ -1232,33 +1233,17 @@ static void __ufs_truncate_blocks(struct inode *inode) 
			break;



	mutex_lock(&ufsi->truncate_mutex);

	switch (depth) {

	case 1:

	if (depth == 1) {

		ufs_trunc_direct(inode);

		goto l1;

	case 2:

		ufs_trunc_branch(inode, offsets + 1, depth2, 1,

			   ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK));

		goto l2;

	case 3:

		ufs_trunc_branch(inode, offsets + 1, depth2, 2,

			    ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK));

		goto l3;

	case 4:

		ufs_trunc_branch(inode, offsets + 1, depth2, 3,

			    ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK));

		goto l4;

	}

l1:

	ufs_trunc_branch(inode, NULL, 0, 1,

			   ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK));

l2:

	ufs_trunc_branch(inode, NULL, 0, 2,

			    ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK));

l3:

	ufs_trunc_branch(inode, NULL, 0, 3,

			    ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK));

l4:

		offsets[0] = UFS_IND_BLOCK;

	} else {

		ufs_trunc_branch(inode, offsets + 1, depth2, depth - 1,

			   ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]++));

	}

	for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) {

		ufs_trunc_branch(inode, NULL, 0, i - UFS_IND_BLOCK + 1,

			   ufs_get_direct_data_ptr(uspi, ufsi, i));

	}

	ufsi->i_lastfrag = DIRECT_FRAGMENT;

	mutex_unlock(&ufsi->truncate_mutex);

}