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| author | Gao Xiang <gaoxiang25@huawei.com> | 2018-09-20 00:06:56 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-20 12:25:36 +0200 |
| commit | 5fb76bb04216fdbbee3fec544a0c16e990fefdfb (patch) | |
| tree | c2f3baf642d671df6528ffc9cc21f6528ef48fb0 /drivers/staging/erofs/internal.h | |
| parent | e5e3abbadf0dbd1068f64f8abe70401c5a178180 (diff) | |
| download | linux-5fb76bb04216fdbbee3fec544a0c16e990fefdfb.tar.bz2 | |
staging: erofs: cleanup `z_erofs_vle_normalaccess_readpages'
This patch introduces `__should_decompress_synchronously' to
cleanup `z_erofs_vle_normalaccess_readpages'.
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/erofs/internal.h')
| -rw-r--r-- | drivers/staging/erofs/internal.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h index cfcc6db11cea..c2cc4a016d9e 100644 --- a/drivers/staging/erofs/internal.h +++ b/drivers/staging/erofs/internal.h @@ -95,6 +95,9 @@ struct erofs_sb_info { /* the dedicated workstation for compression */ struct radix_tree_root workstn_tree; + /* threshold for decompression synchronously */ + unsigned int max_sync_decompress_pages; + #ifdef EROFS_FS_HAS_MANAGED_CACHE struct inode *managed_cache; #endif @@ -273,6 +276,14 @@ extern int erofs_try_to_free_cached_page(struct address_space *mapping, struct page *page); #endif +#define DEFAULT_MAX_SYNC_DECOMPRESS_PAGES 3 + +static inline bool __should_decompress_synchronously(struct erofs_sb_info *sbi, + unsigned int nr) +{ + return nr <= sbi->max_sync_decompress_pages; +} + #endif /* we strictly follow PAGE_SIZE and no buffer head yet */ |