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ufs_trunc_branch(): massage towards killing recursion

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We always have 0 < depth2 <= depth in there, so
if (--depth) {
	if (--depth2)
		A
	B
} else {
	C // not using depth2
}
D // not using depth2

is equivalent to

if (--depth2)
	A with s/depth/depth - 1/
if (--depth)
	B
else
	C
D

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-06-18 17:23:34 -04:00
parent 6d1ebbca2b
commit 6aab6dd379
1 changed files with 5 additions and 5 deletions
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10
fs/ufs/inode.c
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@ -1145,12 +1145,12 @@ static void ufs_trunc_branch(struct inode *inode, unsigned *offsets, int depth2,
return; return;
} }
if (--depth2) {
void *ind = ubh_get_data_ptr(uspi, ubh, from++);
ufs_trunc_branch(inode, offsets, depth2, depth - 1, ind);
ubh_mark_buffer_dirty(ubh);
}
if (--depth) { if (--depth) {
if (--depth2) {
void *ind = ubh_get_data_ptr(uspi, ubh, from++);
ufs_trunc_branch(inode, offsets, depth2, depth, ind);
ubh_mark_buffer_dirty(ubh);
}
for (i = from ; i < uspi->s_apb ; i++) { for (i = from ; i < uspi->s_apb ; i++) {
void *ind = ubh_get_data_ptr(uspi, ubh, i); void *ind = ubh_get_data_ptr(uspi, ubh, i);
free_full_branch(inode, depth, ind); free_full_branch(inode, depth, ind);