6 commits

Author	SHA1	Message	Date
Luke	f5d4de8b66	LibC: Stub mlock in sys/mman ... mlock is supposed to prevent memory from being paged out to swap, which we don't have currently. Required by OpenSSL.	2021-07-30 20:49:56 +02:00
Andreas Kling	09bc4cee15	Kernel: Remove unused madvise(MADV_GET_VOLATILE) ... This was used to query the volatile state of a memory region, however nothing ever actually used it.	2021-07-25 17:28:06 +02:00
Andreas Kling	2d1a651e0a	Kernel: Make purgeable memory a VMObject level concept (again) ... This patch changes the semantics of purgeable memory. - AnonymousVMObject now has a "purgeable" flag. It can only be set when constructing the object. (Previously, all anonymous memory was effectively purgeable.) - AnonymousVMObject now has a "volatile" flag. It covers the entire range of physical pages. (Previously, we tracked ranges of volatile pages, effectively making it a page-level concept.) - Non-volatile objects maintain a physical page reservation via the committed pages mechanism, to ensure full coverage for page faults. - When an object is made volatile, it relinquishes any unused committed pages immediately. If later made non-volatile again, we then attempt to make a new committed pages reservation. If this fails, we return ENOMEM to userspace. mmap() now creates purgeable objects if passed the MAP_PURGEABLE option together with MAP_ANONYMOUS. anon_create() memory is always purgeable.	2021-07-25 17:28:05 +02:00
Jean-Baptiste Boric	eecf7a2097	LibC: Move mman.h to sys/mman.h ... POSIX mandates that it is placed there.	2021-05-14 22:24:02 +02:00
Brian Gianforcaro	1682f0b760	Everything: Move to SPDX license identifiers in all files. ... SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *	2021-04-22 11:22:27 +02:00
Andreas Kling	13d7c09125	Libraries: Move to Userland/Libraries/	2021-01-12 12:17:46 +01:00

Renamed from Libraries/LibC/sys/mman.h (Browse further)