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Commit 19527c62 authored by Gao Xiang's avatar Gao Xiang Committed by Greg Kroah-Hartman
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staging: erofs: fix a missing endian conversion 



[ Upstream commit 37ec35a6cc2b99eb7fd6b85b7d7b75dff46bc353 ]

This patch fixes a missing endian conversion in
vle_get_logical_extent_head.

Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarGao Xiang <gaoxiang25@huawei.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 92db94fa

drivers/staging/erofs/unzip_vle.c

+5 −3
Original line number Diff line number Diff line
@@ -1490,6 +1490,7 @@ static erofs_off_t vle_get_logical_extent_head( 
	unsigned long long ofs;

	const unsigned int clusterbits = EROFS_SB(inode->i_sb)->clusterbits;

	const unsigned int clustersize = 1 << clusterbits;

	unsigned int delta0;



	if (page->index != blkaddr) {

		kunmap_atomic(*kaddr_iter);
@@ -1504,12 +1505,13 @@ static erofs_off_t vle_get_logical_extent_head( 
	di = *kaddr_iter + vle_extent_blkoff(inode, lcn);

	switch (vle_cluster_type(di)) {

	case Z_EROFS_VLE_CLUSTER_TYPE_NONHEAD:

		BUG_ON(!di->di_u.delta[0]);

		BUG_ON(lcn < di->di_u.delta[0]);

		delta0 = le16_to_cpu(di->di_u.delta[0]);

		DBG_BUGON(!delta0);

		DBG_BUGON(lcn < delta0);



		ofs = vle_get_logical_extent_head(inode,

			page_iter, kaddr_iter,

			lcn - di->di_u.delta[0], pcn, flags);

			lcn - delta0, pcn, flags);

		break;

	case Z_EROFS_VLE_CLUSTER_TYPE_PLAIN:

		*flags ^= EROFS_MAP_ZIPPED;