linux/fs/erofs
Gao Xiang 101277e37d erofs: apply proper VMA alignment for memory mapped files on THP
[ Upstream commit 4127caee89 ]

There are mainly two reasons that thp_get_unmapped_area() should be
used for EROFS as other filesystems:

 - It's needed to enable PMD mappings as a FSDAX filesystem, see
   commit 74d2fad133 ("thp, dax: add thp_get_unmapped_area for pmd
   mappings");

 - It's useful together with large folios and
   CONFIG_READ_ONLY_THP_FOR_FS which enable THPs for mmapped files
   (e.g. shared libraries) even without FSDAX.  See commit 1854bc6e24
   ("mm/readahead: Align file mappings for non-DAX").

Fixes: 06252e9ce0 ("erofs: dax support for non-tailpacking regular file")
Fixes: ce529cc25b ("erofs: enable large folios for iomap mode")
Fixes: e6687b8922 ("erofs: enable large folios for fscache mode")
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240306053138.2240206-1-hsiangkao@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-15 10:48:15 -04:00
..
compress.h
data.c erofs: apply proper VMA alignment for memory mapped files on THP 2024-03-15 10:48:15 -04:00
decompressor.c erofs: fix lz4 inplace decompression 2024-03-01 13:21:48 +01:00
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
Kconfig
Makefile
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