Messages in this thread Patch in this message | | | Date | Tue, 19 Dec 2023 21:41:23 -0800 | Subject | [PATCH] mm: remove VM_EXEC requirement for THP eligibility | From | Fangrui Song <> |
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Commit e6be37b2e7bd ("mm/huge_memory.c: add missing read-only THP checking in transparent_hugepage_enabled()") introduced the VM_EXEC requirement, which is not strictly needed.
lld's default --rosegment option and GNU ld's -z separate-code option (default on Linux/x86 since binutils 2.31) create a read-only PT_LOAD segment without the PF_X flag, which should be eligible for THP.
Certain architectures support medium and large code models, where .lrodata may be placed in a separate read-only PT_LOAD segment, which should be eligible for THP as well.
Signed-off-by: Fangrui Song <maskray@google.com> --- include/linux/huge_mm.h | 1 - 1 file changed, 1 deletion(-)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index fa0350b0812a..4c9e67e9000f 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -126,7 +126,6 @@ static inline bool file_thp_enabled(struct vm_area_struct *vma) inode = vma->vm_file->f_inode; return (IS_ENABLED(CONFIG_READ_ONLY_THP_FOR_FS)) && - (vma->vm_flags & VM_EXEC) && !inode_is_open_for_write(inode) && S_ISREG(inode->i_mode); } -- 2.43.0.472.g3155946c3a-goog
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