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f2fs: compress: introduce cic/dic slab cache

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Add two slab caches: "f2fs_cic_entry" and "f2fs_dic_entry" for memory
allocation of compress_io_ctx and decompress_io_ctx structure.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2020-09-14 17:05:14 +08:00
committed by Jaegeuk Kim
parent 3108303170
commit c68d6c8830
3 changed files with 70 additions and 7 deletions
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67
fs/f2fs/compress.c
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@@ -17,6 +17,9 @@
#include "node.h"
#include <trace/events/f2fs.h>
static struct kmem_cache *cic_entry_slab;
static struct kmem_cache *dic_entry_slab;
static void *page_array_alloc(struct inode *inode, int nr)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
@@ -1206,7 +1209,7 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc,
fio.version = ni.version;
cic = f2fs_kzalloc(sbi, sizeof(struct compress_io_ctx), GFP_NOFS);
cic = kmem_cache_zalloc(cic_entry_slab, GFP_NOFS);
if (!cic)
goto out_put_dnode;
@@ -1323,7 +1326,7 @@ out_destroy_crypt:
f2fs_put_page(cc->cpages[i], 1);
}
out_put_cic:
kfree(cic);
kmem_cache_free(cic_entry_slab, cic);
out_put_dnode:
f2fs_put_dnode(&dn);
out_unlock_op:
@@ -1361,7 +1364,7 @@ void f2fs_compress_write_end_io(struct bio *bio, struct page *page)
}
page_array_free(cic->inode, cic->rpages, cic->nr_rpages);
kfree(cic);
kmem_cache_free(cic_entry_slab, cic);
}
static int f2fs_write_raw_pages(struct compress_ctx *cc,
@@ -1473,18 +1476,17 @@ destroy_out:
struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode);
struct decompress_io_ctx *dic;
pgoff_t start_idx = start_idx_of_cluster(cc);
int i;
dic = f2fs_kzalloc(sbi, sizeof(struct decompress_io_ctx), GFP_NOFS);
dic = kmem_cache_zalloc(dic_entry_slab, GFP_NOFS);
if (!dic)
return ERR_PTR(-ENOMEM);
dic->rpages = page_array_alloc(cc->inode, cc->cluster_size);
if (!dic->rpages) {
kfree(dic);
kmem_cache_free(dic_entry_slab, dic);
return ERR_PTR(-ENOMEM);
}
@@ -1549,7 +1551,7 @@ void f2fs_free_dic(struct decompress_io_ctx *dic)
}
page_array_free(dic->inode, dic->rpages, dic->nr_rpages);
kfree(dic);
kmem_cache_free(dic_entry_slab, dic);
}
void f2fs_decompress_end_io(struct page **rpages,
@@ -1599,3 +1601,54 @@ void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi)
{
kmem_cache_destroy(sbi->page_array_slab);
}
static int __init f2fs_init_cic_cache(void)
{
cic_entry_slab = f2fs_kmem_cache_create("f2fs_cic_entry",
sizeof(struct compress_io_ctx));
if (!cic_entry_slab)
return -ENOMEM;
return 0;
}
static void f2fs_destroy_cic_cache(void)
{
kmem_cache_destroy(cic_entry_slab);
}
static int __init f2fs_init_dic_cache(void)
{
dic_entry_slab = f2fs_kmem_cache_create("f2fs_dic_entry",
sizeof(struct decompress_io_ctx));
if (!dic_entry_slab)
return -ENOMEM;
return 0;
}
static void f2fs_destroy_dic_cache(void)
{
kmem_cache_destroy(dic_entry_slab);
}
int __init f2fs_init_compress_cache(void)
{
int err;
err = f2fs_init_cic_cache();
if (err)
goto out;
err = f2fs_init_dic_cache();
if (err)
goto free_cic;
return 0;
free_cic:
f2fs_destroy_cic_cache();
out:
return -ENOMEM;
}
void f2fs_destroy_compress_cache(void)
{
f2fs_destroy_dic_cache();
f2fs_destroy_cic_cache();
}