Gao Xiang
432f58b100
To deal the with the cases which inplace decompression is infeasible
for some inplace I/O. Per-CPU buffers was introduced to get rid of page
allocation latency and thrash for low-latency decompression algorithms
such as lz4.
For the big pcluster feature, introduce multipage per-CPU buffers to
keep such inplace I/O pclusters temporarily as well but note that
per-CPU pages are just consecutive virtually.
When a new big pcluster fs is mounted, its max pclustersize will be
read and per-CPU buffers can be growed if needed. Shrinking adjustable
per-CPU buffers is more complex (because we don't know if such size
is still be used), so currently just release them all when unloading.
Link: https://lore.kernel.org/r/20210409190630.19569-1-xiang@kernel.org
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Bug: 201372112
Change-Id: I5b3ab69ef58aaea635911b0c08cceeb4b38122da
(cherry picked from commit 524887347f)
Signed-off-by: Huang Jianan <huangjianan@oppo.com>
7 lines
248 B
Makefile
7 lines
248 B
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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obj-$(CONFIG_EROFS_FS) += erofs.o
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erofs-objs := super.o inode.o data.o namei.o dir.o utils.o pcpubuf.o
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erofs-$(CONFIG_EROFS_FS_XATTR) += xattr.o
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erofs-$(CONFIG_EROFS_FS_ZIP) += decompressor.o zmap.o zdata.o
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