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Be more efficient with ext2 block cache

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This commit is contained in:
Kevin Lange 2015-06-02 19:36:32 -07:00
parent ba3f169e1d
commit 4ad98421ba
1 changed files with 4 additions and 1 deletions
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5
modules/ext2.c
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@ -43,6 +43,8 @@ typedef struct {
uint8_t bgd_block_span;
uint8_t bgd_offset;
unsigned int inode_size;
uint8_t * cache_data;
} ext2_fs_t;
/*
@ -1408,11 +1410,12 @@ static fs_node_t * mount_ext2(fs_node_t * block_device) {
debug_print(INFO, "Allocating cache...");
DC = malloc(sizeof(ext2_disk_cache_entry_t) * this->cache_entries);
this->cache_data = calloc(this->block_size, this->cache_entries);
for (uint32_t i = 0; i < this->cache_entries; ++i) {
DC[i].block_no = 0;
DC[i].dirty = 0;
DC[i].last_use = 0;
DC[i].block = malloc(this->block_size);
DC[i].block = this->cache_data + i * this->block_size;
if (i % 128 == 0) {
debug_print(INFO, "Allocated cache block #%d", i+1);
}