Both MicroLZMA and DEFLATE algorithms can use short-lived pages on
demand for overlap inplace I/O decompression.
However, those short-lived pages are actually added to
`be->decompressed_pages`. Thus, it should be checked instead of
`pcl->compressed_bvecs`.
The LZ4 algorithm doesn't work like this, so it won't be impacted.
Fixes: 67139e36d970 ("erofs: introduce `z_erofs_parse_in_bvecs'")
Signed-off-by: Gao Xiang <hsiang...@linux.alibaba.com>
---
fs/erofs/zdata.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index a7e6847f6f8f..e5e44f926692 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1309,12 +1309,11 @@ static int z_erofs_decompress_pcluster(struct
z_erofs_decompress_backend *be,
put_page(page);
} else {
for (i = 0; i < pclusterpages; ++i) {
- page = pcl->compressed_bvecs[i].page;
+ /* consider shortlived pages added when decompressing */
+ page = be->decompressed_pages[i];
if (erofs_page_is_managed(sbi, page))
continue;
-
- /* recycle all individual short-lived pages */
(void)z_erofs_put_shortlivedpage(be->pagepool, page);
WRITE_ONCE(pcl->compressed_bvecs[i].page, NULL);
}
--
2.39.3
