bbbc6e1570
implemented: - Pages can be shared between maps. - A change made to a map is written to the file, at munmap(). not yet implemented: - VM operation during page IO execution. Because page IO is executed with VM's lock. - Page IO, which does not change a file size with any case. When munmap() races with truncate(), the file size may be changed illegally.
29 lines
542 B
C
29 lines
542 B
C
#ifndef HEADER_PAGER_H
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#define HEADER_PAGER_H
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#include <ihk/types.h>
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enum pager_op {
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PAGER_REQ_CREATE = 0x0001,
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PAGER_REQ_RELEASE = 0x0002,
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PAGER_REQ_READ = 0x0003,
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PAGER_REQ_WRITE = 0x0004,
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};
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/*
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* int pager_req_create(int fd, int flags, int prot, uintptr_t result_rpa);
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*/
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struct pager_create_result {
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uintptr_t handle;
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int maxprot;
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int8_t padding[4];
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};
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/*
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* int pager_req_release(uintptr_t handle);
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*/
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/*
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* int pager_req_read(uintptr_t handle, off_t off, size_t size, uintptr_t buf_rpa);
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*/
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#endif /* HEADER_PAGER_H */
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