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Bookmark or Share- msync(2): synchronize file with memory map - Linux man pagemsync () flushes changes made to the in-core copy of a file that was mapped into memory using mmap (2) back to disk.
- The Essential Guide to msync(): Synchronizing Memory Mapped Files in ...What Does msync () Do? The msync() system call handles synchronizing modified memory mapped regions back to an open file on disk according to POSIX. This ensures crashes or power loss won‘t lead to inconsistent file contents between the disk copy and running program data structures.
- Memory-mapped I/O (The GNU C Library)Function: int msync (void *address, size_t length, int flags) ¶ Preliminary: | MT-Safe | AS-Safe | AC-Safe | See POSIX Safety Concepts. When using shared mappings, the kernel can write the file at any time before the mapping is removed.
- mmap(2) - Linux manual page - man7.orgDESCRIPTION top. mmap () creates a new mapping in the virtual address space of the. calling process. The starting address for the new mapping is. specified in addr. The length argument specifies the length of. the mapping (which must be greater than 0). If addr is NULL, then the kernel chooses the (page-aligned)
- msync(3p) - Linux manual page - man7.orgThe msync() function shall write all modified data to permanent storage locations, if any, in those whole pages containing any part of the address space of the process starting at address addr and continuing for len bytes. If no such storage exists, msync() need not have any effect.
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