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| author | Chunhai Guo <guochunhai@vivo.com> | 2024-04-02 13:00:36 +0300 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2024-05-08 12:12:49 +0300 |
| commit | f36f3010f67611a45d66e773bc91e4c66a9abab5 (patch) | |
| tree | 8eea1fa6dd42d314a15641fd422f7998cad69a05 /fs/erofs/super.c | |
| parent | cacd5b04e24c74a813c694ec7b26a1a370b5d666 (diff) | |
| download | linux-f36f3010f67611a45d66e773bc91e4c66a9abab5.tar.xz | |
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/super.c')
| -rw-r--r-- | fs/erofs/super.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 30b49b2eee53..c1dae1fb949b 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -859,7 +859,10 @@ static int __init erofs_module_init(void) if (err) goto deflate_err; - erofs_pcpubuf_init(); + err = z_erofs_gbuf_init(); + if (err) + goto gbuf_err; + err = z_erofs_init_zip_subsystem(); if (err) goto zip_err; @@ -879,6 +882,8 @@ fs_err: sysfs_err: z_erofs_exit_zip_subsystem(); zip_err: + z_erofs_gbuf_exit(); +gbuf_err: z_erofs_deflate_exit(); deflate_err: z_erofs_lzma_exit(); @@ -902,7 +907,7 @@ static void __exit erofs_module_exit(void) z_erofs_lzma_exit(); erofs_exit_shrinker(); kmem_cache_destroy(erofs_inode_cachep); - erofs_pcpubuf_exit(); + z_erofs_gbuf_exit(); } static int erofs_statfs(struct dentry *dentry, struct kstatfs *buf) |