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| author | Gao Xiang <hsiangkao@redhat.com> | 2020-12-08 10:58:32 +0100 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@redhat.com> | 2020-12-08 11:08:21 +0100 |
| commit | 6aaa7b0664e6886f6154070edbc24435d6e1f86b (patch) | |
| tree | e071fea60039165f7eacf8b8780979811b0f80bc /security | |
| parent | erofs: remove a void EROFS_VERSION macro set in Makefile (diff) | |
| download | linux-6aaa7b0664e6886f6154070edbc24435d6e1f86b.tar.xz linux-6aaa7b0664e6886f6154070edbc24435d6e1f86b.zip | |
erofs: get rid of magical Z_EROFS_MAPPING_STAGING
Previously, we played around with magical page->mapping for short-lived
temporary pages since we need to identify different types of pages in
the same pcluster but both invalidated and short-lived temporary pages
can have page->mapping == NULL. It was considered as safe because that
temporary pages are all non-LRU / non-movable pages.
This patch tends to use specific page->private to identify short-lived
pages instead so it won't rely on page->mapping anymore. Details are
described in "compress.h" as well.
Link: https://lore.kernel.org/r/20201208095834.3133565-1-hsiangkao@redhat.com
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions