diff options
| author | Chunhai Guo <guochunhai@vivo.com> | 2024-04-02 04:00:36 -0600 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2024-05-08 17:12:49 +0800 |
| commit | f36f3010f67611a45d66e773bc91e4c66a9abab5 (patch) | |
| tree | 8eea1fa6dd42d314a15641fd422f7998cad69a05 /fs/erofs/internal.h | |
| parent | cacd5b04e24c74a813c694ec7b26a1a370b5d666 (diff) | |
erofs: rename per-CPU buffers to global buffer pool and make it configurable
It will cost more time if compressed buffers are allocated on demand for
low-latency algorithms (like lz4) so EROFS uses per-CPU buffers to keep
compressed data if in-place decompression is unfulfilled. While it is kind
of wasteful of memory for a device with hundreds of CPUs, and only a small
number of CPUs concurrently decompress most of the time.
This patch renames it as 'global buffer pool' and makes it configurable.
This allows two or more CPUs to share a common buffer to reduce memory
occupation.
Suggested-by: Gao Xiang <xiang@kernel.org>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Chunhai Guo <guochunhai@vivo.com>
Link: https://lore.kernel.org/r/20240402100036.2673604-1-guochunhai@vivo.com
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
Link: https://lore.kernel.org/r/20240408215231.3376659-1-dhavale@google.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/internal.h')
| -rw-r--r-- | fs/erofs/internal.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index d28ccfc0352b..ee080d042ab3 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -463,11 +463,11 @@ int erofs_try_to_free_all_cached_folios(struct erofs_sb_info *sbi, struct erofs_workgroup *egrp); int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map, int flags); -void *erofs_get_pcpubuf(unsigned int requiredpages); -void erofs_put_pcpubuf(void *ptr); -int erofs_pcpubuf_growsize(unsigned int nrpages); -void __init erofs_pcpubuf_init(void); -void erofs_pcpubuf_exit(void); +void *z_erofs_get_gbuf(unsigned int requiredpages); +void z_erofs_put_gbuf(void *ptr); +int z_erofs_gbuf_growsize(unsigned int nrpages); +int __init z_erofs_gbuf_init(void); +void z_erofs_gbuf_exit(void); int erofs_init_managed_cache(struct super_block *sb); int z_erofs_parse_cfgs(struct super_block *sb, struct erofs_super_block *dsb); #else @@ -477,8 +477,8 @@ static inline int erofs_init_shrinker(void) { return 0; } static inline void erofs_exit_shrinker(void) {} static inline int z_erofs_init_zip_subsystem(void) { return 0; } static inline void z_erofs_exit_zip_subsystem(void) {} -static inline void erofs_pcpubuf_init(void) {} -static inline void erofs_pcpubuf_exit(void) {} +static inline int z_erofs_gbuf_init(void) { return 0; } +static inline void z_erofs_gbuf_exit(void) {} static inline int erofs_init_managed_cache(struct super_block *sb) { return 0; } #endif /* !CONFIG_EROFS_FS_ZIP */ |