diff options
author | Jonathan Corbet <corbet@lwn.net> | 2019-10-29 04:43:29 -0600 |
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committer | Jonathan Corbet <corbet@lwn.net> | 2019-10-29 04:43:29 -0600 |
commit | 822bbba0cabb50825a0ce22707dc45eb82d02853 (patch) | |
tree | ea61d4ca72cb60b4cae8e95f64eefa7cd2a36603 /fs/erofs/zdata.c | |
parent | d41abfd7ae33cd3c1d9189438937d61cb75e690a (diff) | |
parent | 7d194c2100ad2a6dded545887d02754948ca5241 (diff) |
Merge tag 'v5.4-rc4' into docs-next
I need to pick up the independent changes made to
Documentation/core-api/memory-allocation.rst to be able to merge further
work without creating a total mess.
Diffstat (limited to 'fs/erofs/zdata.c')
-rw-r--r-- | fs/erofs/zdata.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index 96e34c90f814..fad80c97d247 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -575,7 +575,7 @@ static int z_erofs_do_read_page(struct z_erofs_decompress_frontend *fe, struct erofs_map_blocks *const map = &fe->map; struct z_erofs_collector *const clt = &fe->clt; const loff_t offset = page_offset(page); - bool tight = (clt->mode >= COLLECT_PRIMARY_HOOKED); + bool tight = true; enum z_erofs_cache_alloctype cache_strategy; enum z_erofs_page_type page_type; @@ -628,8 +628,16 @@ restart_now: preload_compressed_pages(clt, MNGD_MAPPING(sbi), cache_strategy, pagepool); - tight &= (clt->mode >= COLLECT_PRIMARY_HOOKED); hitted: + /* + * Ensure the current partial page belongs to this submit chain rather + * than other concurrent submit chains or the noio(bypass) chain since + * those chains are handled asynchronously thus the page cannot be used + * for inplace I/O or pagevec (should be processed in strict order.) + */ + tight &= (clt->mode >= COLLECT_PRIMARY_HOOKED && + clt->mode != COLLECT_PRIMARY_FOLLOWED_NOINPLACE); + cur = end - min_t(unsigned int, offset + end - map->m_la, end); if (!(map->m_flags & EROFS_MAP_MAPPED)) { zero_user_segment(page, cur, end); |