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Reviewed-by: Suren Baghdasaryan Signed-off-by: Minchan Kim --- mm/madvise.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 349473fc6683..6543f2bfc3d8 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -36,6 +36,7 @@ struct madvise_walk_private { struct mmu_gather *tlb; bool pageout; + struct task_struct *target_task; }; =20 /* @@ -316,6 +317,10 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *= pmd, if (fatal_signal_pending(current)) return -EINTR; =20 + if (private->target_task && + fatal_signal_pending(private->target_task)) + return -EINTR; + #ifdef CONFIG_TRANSPARENT_HUGEPAGE if (pmd_trans_huge(*pmd)) { pmd_t orig_pmd; @@ -471,12 +476,14 @@ static const struct mm_walk_ops cold_walk_ops =3D { }; =20 static void madvise_cold_page_range(struct mmu_gather *tlb, + struct task_struct *task, struct vm_area_struct *vma, unsigned long addr, unsigned long end) { struct madvise_walk_private walk_private =3D { .pageout =3D false, .tlb =3D tlb, + .target_task =3D task, }; =20 tlb_start_vma(tlb, vma); @@ -484,7 +491,8 @@ static void madvise_cold_page_range(struct mmu_gather= *tlb, tlb_end_vma(tlb, vma); } =20 -static long madvise_cold(struct vm_area_struct *vma, +static long madvise_cold(struct task_struct *task, + struct vm_area_struct *vma, struct vm_area_struct **prev, unsigned long start_addr, unsigned long end_addr) { @@ -497,19 +505,21 @@ static long madvise_cold(struct vm_area_struct *vma= , =20 lru_add_drain(); tlb_gather_mmu(&tlb, mm, start_addr, end_addr); - madvise_cold_page_range(&tlb, vma, start_addr, end_addr); + madvise_cold_page_range(&tlb, task, vma, start_addr, end_addr); tlb_finish_mmu(&tlb, start_addr, end_addr); =20 return 0; } =20 static void madvise_pageout_page_range(struct mmu_gather *tlb, + struct task_struct *task, struct vm_area_struct *vma, unsigned long addr, unsigned long end) { struct madvise_walk_private walk_private =3D { .pageout =3D true, .tlb =3D tlb, + .target_task =3D task, }; =20 tlb_start_vma(tlb, vma); @@ -533,7 +543,8 @@ static inline bool can_do_pageout(struct vm_area_stru= ct *vma) inode_permission(file_inode(vma->vm_file), MAY_WRITE) =3D=3D 0; } =20 -static long madvise_pageout(struct vm_area_struct *vma, +static long madvise_pageout(struct task_struct *task, + struct vm_area_struct *vma, struct vm_area_struct **prev, unsigned long start_addr, unsigned long end_addr) { @@ -549,7 +560,7 @@ static long madvise_pageout(struct vm_area_struct *vm= a, =20 lru_add_drain(); tlb_gather_mmu(&tlb, mm, start_addr, end_addr); - madvise_pageout_page_range(&tlb, vma, start_addr, end_addr); + madvise_pageout_page_range(&tlb, task, vma, start_addr, end_addr); tlb_finish_mmu(&tlb, start_addr, end_addr); =20 return 0; @@ -929,7 +940,8 @@ static int madvise_inject_error(int behavior, #endif =20 static long -madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev, +madvise_vma(struct task_struct *task, struct vm_area_struct *vma, + struct vm_area_struct **prev, unsigned long start, unsigned long end, int behavior) { switch (behavior) { @@ -938,9 +950,9 @@ madvise_vma(struct vm_area_struct *vma, struct vm_are= a_struct **prev, case MADV_WILLNEED: return madvise_willneed(vma, prev, start, end); case MADV_COLD: - return madvise_cold(vma, prev, start, end); + return madvise_cold(task, vma, prev, start, end); case MADV_PAGEOUT: - return madvise_pageout(vma, prev, start, end); + return madvise_pageout(task, vma, prev, start, end); case MADV_FREE: case MADV_DONTNEED: return madvise_dontneed_free(vma, prev, start, end, behavior); @@ -1140,7 +1152,8 @@ int do_madvise(struct task_struct *target_task, str= uct mm_struct *mm, tmp =3D end; =20 /* Here vma->vm_start <=3D start < tmp <=3D (end|vma->vm_end). */ - error =3D madvise_vma(vma, &prev, start, tmp, behavior); + error =3D madvise_vma(target_task, vma, &prev, + start, tmp, behavior); if (error) goto out; start =3D tmp; --=20 2.25.0.265.gbab2e86ba0-goog