Max Wash
e9e73bc027
bcaches must now have an explicit external lock to protect them from concurrent access (i.e. a lock belonging to their parent block device)
37 lines
882 B
C
37 lines
882 B
C
#ifndef SOCKS_BLOCK_H_
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#define SOCKS_BLOCK_H_
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#include <socks/types.h>
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#include <socks/btree.h>
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#include <socks/locks.h>
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#include <socks/status.h>
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#include <stdbool.h>
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enum block_device_flags {
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BLOCK_DEVICE_NO_BCACHE = 0x01u,
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};
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struct bcache {
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unsigned int b_sector_size;
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unsigned int b_sectors_per_page;
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struct btree b_pagetree;
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};
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struct bcache_sector {
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struct vm_page *sect_page;
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unsigned int sect_index;
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void *sect_buf;
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bool sect_present;
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};
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extern struct bcache *bcache_create(unsigned int block_size);
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extern void bcache_destroy(struct bcache *cache);
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extern kern_status_t bcache_init(struct bcache *cache, unsigned int block_size);
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extern void bcache_deinit(struct bcache *cache);
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extern kern_status_t bcache_get(struct bcache *cache, sectors_t at, bool create, struct bcache_sector *out);
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extern void bcache_mark_present(struct bcache_sector *sect);
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#endif
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