map or unmap files or devices into memory NAME mmap, munmap - map or unmap files or devices into memory LIBRARY Standard C library ( libc , -...map files or devices into memory NAME mmap2 - map files or devices into memory LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #i......order in memory. The advantage of using remap_file_pages () over using repeated calls to mmap (2) is that the former approach does not require the kernel to create additional VM…map or unmap files or devices into memory NAME mmap, munmap - map or unmap files or devices into memory LIBRARY Standard C library ( libc , -......f_event_open () returns a file descriptor, for use in subsequent system calls ( read (2), mmap (2), prctl (2), fcntl (2), etc.). A call to perf_event_open () creates a file desc…...(2) 2.6.16 mknod (2) 1.0 mknodat (2) 2.6.16 mlock (2) 2.0 mlock2 (2) 4.4 mlockall (2) 2.0 mmap (2) 1.0 mmap2 (2) 2.4 modify_ldt (2) 1.0 mount (2) 1.0 move_mount (2) 5.2 move_pag…...this flag set, use 0xc0000000 as the offset at which to search a virtual memory chunk on mmap (2); otherwise use 0xffffe000. Applies to 32-bit x86 processes only. FDPIC_FUNCPTRS…...ge" is a fixed-length block, the unit for memory allocation and file mapping performed by mmap (2). VERSIONS A user program should not hard-code a page size, neither as a litera…...zero, and old_address refers to a shareable mapping (see the description of MAP_SHARED in mmap (2)), then mremap () will create a new mapping of the same pages. new_size will be…...ve the same semantics as other anonymous memory allocations such as those allocated using mmap (2) with the MAP_ANONYMOUS flag. The initial size of the file is set to 0. Followi…...indicate the error. ERRORS In addition to all of the error codes returned by open (2) and mmap (2), the following may also be returned: EACCES The library specified by library d…...between the file descriptors. The in_fd argument must correspond to a file which supports mmap (2)-like operations (i.e., it cannot be a socket). Except since Linux 5.12 and if …...between the file descriptors. The in_fd argument must correspond to a file which supports mmap (2)-like operations (i.e., it cannot be a socket). Except since Linux 5.12 and if …...c () flushes changes made to the in-core copy of a file that was mapped into memory using mmap (2) back to the filesystem. Without use of this call, there is no guarantee that c…...ng process unmaps a memory range, either explicitly using munmap (2) or implicitly during mmap (2) or mremap (2). The event details are available in the remove field. pagefault.…...se register directly. Memory in the first 2 GB of address space can be allocated by using mmap (2) with the MAP_32BIT flag. Because of the aforementioned optimization, using arc…...CES The memory cannot be given the specified access. This can happen, for example, if you mmap (2) a file to which you have read-only access, then ask mprotect () to mark it PRO…...CES The memory cannot be given the specified access. This can happen, for example, if you mmap (2) a file to which you have read-only access, then ask mprotect () to mark it PRO…...locations include pages for memory-mapped files in process memory ranges mapped using the mmap (2) call with the MAP_PRIVATE flag for read accesses, and in memory ranges mapped …...ult policy also controls allocation of any pages for memory-mapped files mapped using the mmap (2) call with the MAP_PRIVATE flag and that are only read (loaded) from by the thr…