system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-01 17:00:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

erofs: fix up inplace decompression success rate

Browse source 
Partial decompression should be checked after updating length.
It's a new regression when introducing multi-reference pclusters.

Fixes: 2bfab9c0ed ("erofs: record the longest decompressed size in this round")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221014064915.8103-1-hsiangkao@linux.alibaba.com
This commit is contained in:
Gao Xiang 2022-10-14 14:49:15 +08:00
parent 63bbb85658
commit e7933278b4
1 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
fs/erofs/zdata.c
View file

@ -813,15 +813,14 @@ static int z_erofs_do_read_page(struct z_erofs_decompress_frontend *fe,
++spiltted;
if (fe->pcl->pageofs_out != (map->m_la & ~PAGE_MASK))
fe->pcl->multibases = true;
if ((map->m_flags & EROFS_MAP_FULL_MAPPED) &&
!(map->m_flags & EROFS_MAP_PARTIAL_REF) &&
fe->pcl->length == map->m_llen)
fe->pcl->partial = false;
if (fe->pcl->length < offset + end - map->m_la) {
fe->pcl->length = offset + end - map->m_la;
fe->pcl->pageofs_out = map->m_la & ~PAGE_MASK;
}
if ((map->m_flags & EROFS_MAP_FULL_MAPPED) &&
!(map->m_flags & EROFS_MAP_PARTIAL_REF) &&
fe->pcl->length == map->m_llen)
fe->pcl->partial = false;
next_part:
/* shorten the remaining extent to update progress */
map->m_llen = offset + cur - map->m_la;