diff options
Diffstat (limited to 'man5/proc_sys_vm.5')
| -rw-r--r-- | man5/proc_sys_vm.5 | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/man5/proc_sys_vm.5 b/man5/proc_sys_vm.5 index 17a7dd2ec..d4c19f460 100644 --- a/man5/proc_sys_vm.5 +++ b/man5/proc_sys_vm.5 @@ -31,10 +31,10 @@ Systems running in "overcommit never" mode (i.e., 2 in .IR /proc/sys/vm/overcommit_memory ) should increase the value in this file to account for the full virtual memory size of the programs used to recover (e.g., -.BR login (1) -.BR ssh (1), +.MR login 1 +.MR ssh 1 , and -.BR top (1)) +.MR top 1 ) Otherwise, the superuser may not be able to log in to recover the system. For example, on x86-64 a suitable value is 131072 (128MiB reserved). .IP @@ -85,7 +85,7 @@ echo 3 > /proc/sys/vm/drop_caches Because writing to this file is a nondestructive operation and dirty objects are not freeable, the user should run -.BR sync (1) +.MR sync 1 first. .TP .IR /proc/sys/vm/sysctl_hugetlb_shm_group " (since Linux 2.6.7)" @@ -96,10 +96,10 @@ matches this group ID, then it can make huge-page allocations without holding the .B CAP_IPC_LOCK capability; see -.BR memfd_create (2), -.BR mmap (2), +.MR memfd_create 2 , +.MR mmap 2 , and -.BR shmget (2). +.MR shmget 2 . .TP .IR /proc/sys/vm/legacy_va_layout " (since Linux 2.6.9)" .\" The following is from Documentation/filesystems/proc.txt @@ -140,7 +140,7 @@ signal with set to .BR BUS_MCEERR_AO . Processes can handle this if they want to; see -.BR sigaction (2) +.MR sigaction 2 for more details. .IP This feature is active only on architectures/platforms with advanced machine @@ -149,7 +149,7 @@ check handling and depends on the hardware capabilities. Applications can override the .I memory_failure_early_kill setting individually with the -.BR prctl (2) +.MR prctl 2 .B PR_MCE_KILL operation. .IP @@ -263,7 +263,7 @@ Values are: .RE .IP In mode 0, calls of -.BR mmap (2) +.MR mmap 2 with .B MAP_NORESERVE are not checked, and the default check is very weak, @@ -355,7 +355,8 @@ using memory policies .RB ( mbind (2) .BR MPOL_BIND ) or cpusets -.RB ( cpuset (7)) +\%(\c +.MR cpuset 7 ) and those nodes reach memory exhaustion status, one process may be killed by the OOM-killer. No panic occurs in this case: @@ -407,14 +408,14 @@ an application requests memory. .\" cefdca0a86be517bc390fc4541e3674b8e7803b0 This (writable) file exposes a flag that controls whether unprivileged processes are allowed to employ -.BR userfaultfd (2). +.MR userfaultfd 2 . If this file has the value 1, then unprivileged processes may use -.BR userfaultfd (2). +.MR userfaultfd 2 . If this file has the value 0, then only processes that have the .B CAP_SYS_PTRACE capability may employ -.BR userfaultfd (2). +.MR userfaultfd 2 . The default value in this file is 1. .SH SEE ALSO -.BR proc (5), -.BR proc_sys (5) +.MR proc 5 , +.MR proc_sys 5 |