Gao Xiang b3ad7f39fd erofs: ensure that the post-EOF tails are all zeroed ... commit e4c1cf523d upstream. This was accidentally fixed up in commit e4c1cf523d but we can't take the full change due to other dependancy issues, so here is just the actual bugfix that is needed. [Background] keltargw reported an issue [1] that with mmaped I/Os, sometimes the tail of the last page (after file ends) is not filled with zeroes. The root cause is that such tail page could be wrongly selected for inplace I/Os so the zeroed part will then be filled with compressed data instead of zeroes. A simple fix is to avoid doing inplace I/Os for such tail parts, actually that was already fixed upstream in commit e4c1cf523d ("erofs: tidy up z_erofs_do_read_page()") by accident. [1] https://lore.kernel.org/r/3ad8b469-25db-a297-21f9-75db2d6ad224@linux.alibaba.com Reported-by: keltargw <keltar.gw@gmail.com> Fixes: 3883a79abd ("staging: erofs: introduce VLE decompression support") Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-09-06 21:28:37 +01:00
..
Kconfig	…
Makefile	…
compress.h	…
data.c	iomap: Add done_before argument to iomap_dio_rw	2022-05-01 17:22:32 +02:00
decompressor.c	erofs: avoid consecutive detection for Highmem memory	2022-08-17 14:23:12 +02:00
dir.c	…
erofs_fs.h	…
inode.c	erofs: fix fsdax unavailability for chunk-based regular files	2023-07-23 13:47:44 +02:00
internal.h	erofs: decouple basic mount options from fs_context	2023-07-23 13:47:44 +02:00
namei.c	…
pcpubuf.c	…
super.c	erofs: decouple basic mount options from fs_context	2023-07-23 13:47:44 +02:00
tagptr.h	…
utils.c	erofs: fix deadlock when shrink erofs slab	2021-12-01 09:04:50 +01:00
xattr.c	erofs: decouple basic mount options from fs_context	2023-07-23 13:47:44 +02:00
xattr.h	…
zdata.c	erofs: ensure that the post-EOF tails are all zeroed	2023-09-06 21:28:37 +01:00
zdata.h	…
zmap.c	erofs: fix compact 4B support for 16k block size	2023-07-23 13:47:48 +02:00
zpvec.h	erofs: fix unsafe pagevec reuse of hooked pclusters	2021-11-18 19:17:15 +01:00