mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 14:41:39 +00:00
3d8f761531
The implementation of readahead(2) syscall is identical to that of
fadvise64(POSIX_FADV_WILLNEED) with a few exceptions:
1. readahead(2) returns -EINVAL for !mapping->a_ops and fadvise64()
ignores the request and returns 0.
2. fadvise64() checks for integer overflow corner case
3. fadvise64() calls the optional filesystem fadvise() file operation
Unite the two implementations by calling vfs_fadvise() from readahead(2)
syscall. Check the !mapping->a_ops in readahead(2) syscall to preserve
documented syscall ABI behaviour.
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: d1d04ef857 ("ovl: stack file ops")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
108 lines
3.6 KiB
Makefile
108 lines
3.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Makefile for the linux memory manager.
|
|
#
|
|
|
|
KASAN_SANITIZE_slab_common.o := n
|
|
KASAN_SANITIZE_slab.o := n
|
|
KASAN_SANITIZE_slub.o := n
|
|
|
|
# These files are disabled because they produce non-interesting and/or
|
|
# flaky coverage that is not a function of syscall inputs. E.g. slab is out of
|
|
# free pages, or a task is migrated between nodes.
|
|
KCOV_INSTRUMENT_slab_common.o := n
|
|
KCOV_INSTRUMENT_slob.o := n
|
|
KCOV_INSTRUMENT_slab.o := n
|
|
KCOV_INSTRUMENT_slub.o := n
|
|
KCOV_INSTRUMENT_page_alloc.o := n
|
|
KCOV_INSTRUMENT_debug-pagealloc.o := n
|
|
KCOV_INSTRUMENT_kmemleak.o := n
|
|
KCOV_INSTRUMENT_memcontrol.o := n
|
|
KCOV_INSTRUMENT_mmzone.o := n
|
|
KCOV_INSTRUMENT_vmstat.o := n
|
|
|
|
mmu-y := nommu.o
|
|
mmu-$(CONFIG_MMU) := gup.o highmem.o memory.o mincore.o \
|
|
mlock.o mmap.o mprotect.o mremap.o msync.o \
|
|
page_vma_mapped.o pagewalk.o pgtable-generic.o \
|
|
rmap.o vmalloc.o
|
|
|
|
|
|
ifdef CONFIG_CROSS_MEMORY_ATTACH
|
|
mmu-$(CONFIG_MMU) += process_vm_access.o
|
|
endif
|
|
|
|
obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
|
|
maccess.o page_alloc.o page-writeback.o \
|
|
readahead.o swap.o truncate.o vmscan.o shmem.o \
|
|
util.o mmzone.o vmstat.o backing-dev.o \
|
|
mm_init.o mmu_context.o percpu.o slab_common.o \
|
|
compaction.o vmacache.o \
|
|
interval_tree.o list_lru.o workingset.o \
|
|
debug.o $(mmu-y)
|
|
|
|
obj-y += init-mm.o
|
|
|
|
ifdef CONFIG_NO_BOOTMEM
|
|
obj-y += nobootmem.o
|
|
else
|
|
obj-y += bootmem.o
|
|
endif
|
|
|
|
ifdef CONFIG_MMU
|
|
obj-$(CONFIG_ADVISE_SYSCALLS) += madvise.o
|
|
endif
|
|
obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
|
|
|
|
obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o swap_slots.o
|
|
obj-$(CONFIG_FRONTSWAP) += frontswap.o
|
|
obj-$(CONFIG_ZSWAP) += zswap.o
|
|
obj-$(CONFIG_HAS_DMA) += dmapool.o
|
|
obj-$(CONFIG_HUGETLBFS) += hugetlb.o
|
|
obj-$(CONFIG_NUMA) += mempolicy.o
|
|
obj-$(CONFIG_SPARSEMEM) += sparse.o
|
|
obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o
|
|
obj-$(CONFIG_SLOB) += slob.o
|
|
obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
|
|
obj-$(CONFIG_KSM) += ksm.o
|
|
obj-$(CONFIG_PAGE_POISONING) += page_poison.o
|
|
obj-$(CONFIG_SLAB) += slab.o
|
|
obj-$(CONFIG_SLUB) += slub.o
|
|
obj-$(CONFIG_KASAN) += kasan/
|
|
obj-$(CONFIG_FAILSLAB) += failslab.o
|
|
obj-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
|
|
obj-$(CONFIG_MEMTEST) += memtest.o
|
|
obj-$(CONFIG_MIGRATION) += migrate.o
|
|
obj-$(CONFIG_QUICKLIST) += quicklist.o
|
|
obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += huge_memory.o khugepaged.o
|
|
obj-$(CONFIG_PAGE_COUNTER) += page_counter.o
|
|
obj-$(CONFIG_MEMCG) += memcontrol.o vmpressure.o
|
|
obj-$(CONFIG_MEMCG_SWAP) += swap_cgroup.o
|
|
obj-$(CONFIG_CGROUP_HUGETLB) += hugetlb_cgroup.o
|
|
obj-$(CONFIG_GUP_BENCHMARK) += gup_benchmark.o
|
|
obj-$(CONFIG_MEMORY_FAILURE) += memory-failure.o
|
|
obj-$(CONFIG_HWPOISON_INJECT) += hwpoison-inject.o
|
|
obj-$(CONFIG_DEBUG_KMEMLEAK) += kmemleak.o
|
|
obj-$(CONFIG_DEBUG_KMEMLEAK_TEST) += kmemleak-test.o
|
|
obj-$(CONFIG_DEBUG_RODATA_TEST) += rodata_test.o
|
|
obj-$(CONFIG_PAGE_OWNER) += page_owner.o
|
|
obj-$(CONFIG_CLEANCACHE) += cleancache.o
|
|
obj-$(CONFIG_MEMORY_ISOLATION) += page_isolation.o
|
|
obj-$(CONFIG_ZPOOL) += zpool.o
|
|
obj-$(CONFIG_ZBUD) += zbud.o
|
|
obj-$(CONFIG_ZSMALLOC) += zsmalloc.o
|
|
obj-$(CONFIG_Z3FOLD) += z3fold.o
|
|
obj-$(CONFIG_GENERIC_EARLY_IOREMAP) += early_ioremap.o
|
|
obj-$(CONFIG_CMA) += cma.o
|
|
obj-$(CONFIG_MEMORY_BALLOON) += balloon_compaction.o
|
|
obj-$(CONFIG_PAGE_EXTENSION) += page_ext.o
|
|
obj-$(CONFIG_CMA_DEBUGFS) += cma_debug.o
|
|
obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
|
|
obj-$(CONFIG_IDLE_PAGE_TRACKING) += page_idle.o
|
|
obj-$(CONFIG_FRAME_VECTOR) += frame_vector.o
|
|
obj-$(CONFIG_DEBUG_PAGE_REF) += debug_page_ref.o
|
|
obj-$(CONFIG_HARDENED_USERCOPY) += usercopy.o
|
|
obj-$(CONFIG_PERCPU_STATS) += percpu-stats.o
|
|
obj-$(CONFIG_HMM) += hmm.o
|
|
obj-$(CONFIG_MEMFD_CREATE) += memfd.o
|