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-rw-r--r--fs/proc/inode.c4
-rw-r--r--fs/proc/meminfo.c5
-rw-r--r--fs/proc/proc_sysctl.c2
-rw-r--r--fs/proc/task_mmu.c77
-rw-r--r--fs/proc/task_nommu.c6
-rw-r--r--fs/proc/vmcore.c4
6 files changed, 53 insertions, 45 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index f495fdb39151..67b09a1d9433 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -591,7 +591,7 @@ static const struct file_operations proc_iter_file_ops = {
.llseek = proc_reg_llseek,
.read_iter = proc_reg_read_iter,
.write = proc_reg_write,
- .splice_read = generic_file_splice_read,
+ .splice_read = copy_splice_read,
.poll = proc_reg_poll,
.unlocked_ioctl = proc_reg_unlocked_ioctl,
.mmap = proc_reg_mmap,
@@ -617,7 +617,7 @@ static const struct file_operations proc_reg_file_ops_compat = {
static const struct file_operations proc_iter_file_ops_compat = {
.llseek = proc_reg_llseek,
.read_iter = proc_reg_read_iter,
- .splice_read = generic_file_splice_read,
+ .splice_read = copy_splice_read,
.write = proc_reg_write,
.poll = proc_reg_poll,
.unlocked_ioctl = proc_reg_unlocked_ioctl,
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index b43d0bd42762..8dca4d6d96c7 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -168,6 +168,11 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
global_zone_page_state(NR_FREE_CMA_PAGES));
#endif
+#ifdef CONFIG_UNACCEPTED_MEMORY
+ show_val_kb(m, "Unaccepted: ",
+ global_zone_page_state(NR_UNACCEPTED));
+#endif
+
hugetlb_report_meminfo(m);
arch_report_meminfo(m);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 8038833ff5b0..ae832e982003 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -868,7 +868,7 @@ static const struct file_operations proc_sys_file_operations = {
.poll = proc_sys_poll,
.read_iter = proc_sys_read,
.write_iter = proc_sys_write,
- .splice_read = generic_file_splice_read,
+ .splice_read = copy_splice_read,
.splice_write = iter_file_splice_write,
.llseek = default_llseek,
};
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 420510f6a545..507cd4e59d07 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -538,13 +538,14 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
bool locked = !!(vma->vm_flags & VM_LOCKED);
struct page *page = NULL;
bool migration = false, young = false, dirty = false;
+ pte_t ptent = ptep_get(pte);
- if (pte_present(*pte)) {
- page = vm_normal_page(vma, addr, *pte);
- young = pte_young(*pte);
- dirty = pte_dirty(*pte);
- } else if (is_swap_pte(*pte)) {
- swp_entry_t swpent = pte_to_swp_entry(*pte);
+ if (pte_present(ptent)) {
+ page = vm_normal_page(vma, addr, ptent);
+ young = pte_young(ptent);
+ dirty = pte_dirty(ptent);
+ } else if (is_swap_pte(ptent)) {
+ swp_entry_t swpent = pte_to_swp_entry(ptent);
if (!non_swap_entry(swpent)) {
int mapcount;
@@ -631,14 +632,11 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
goto out;
}
- if (pmd_trans_unstable(pmd))
- goto out;
- /*
- * The mmap_lock held all the way back in m_start() is what
- * keeps khugepaged out of here and from collapsing things
- * in here.
- */
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
+ if (!pte) {
+ walk->action = ACTION_AGAIN;
+ return 0;
+ }
for (; addr != end; pte++, addr += PAGE_SIZE)
smaps_pte_entry(pte, addr, walk);
pte_unmap_unlock(pte - 1, ptl);
@@ -735,11 +733,12 @@ static int smaps_hugetlb_range(pte_t *pte, unsigned long hmask,
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = walk->vma;
struct page *page = NULL;
+ pte_t ptent = ptep_get(pte);
- if (pte_present(*pte)) {
- page = vm_normal_page(vma, addr, *pte);
- } else if (is_swap_pte(*pte)) {
- swp_entry_t swpent = pte_to_swp_entry(*pte);
+ if (pte_present(ptent)) {
+ page = vm_normal_page(vma, addr, ptent);
+ } else if (is_swap_pte(ptent)) {
+ swp_entry_t swpent = pte_to_swp_entry(ptent);
if (is_pfn_swap_entry(swpent))
page = pfn_swap_entry_to_page(swpent);
@@ -1108,7 +1107,7 @@ static inline void clear_soft_dirty(struct vm_area_struct *vma,
* Documentation/admin-guide/mm/soft-dirty.rst for full description
* of how soft-dirty works.
*/
- pte_t ptent = *pte;
+ pte_t ptent = ptep_get(pte);
if (pte_present(ptent)) {
pte_t old_pte;
@@ -1191,12 +1190,13 @@ out:
return 0;
}
- if (pmd_trans_unstable(pmd))
- return 0;
-
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
+ if (!pte) {
+ walk->action = ACTION_AGAIN;
+ return 0;
+ }
for (; addr != end; pte++, addr += PAGE_SIZE) {
- ptent = *pte;
+ ptent = ptep_get(pte);
if (cp->type == CLEAR_REFS_SOFT_DIRTY) {
clear_soft_dirty(vma, addr, pte);
@@ -1538,9 +1538,6 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end,
spin_unlock(ptl);
return err;
}
-
- if (pmd_trans_unstable(pmdp))
- return 0;
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
/*
@@ -1548,10 +1545,14 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end,
* goes beyond vma->vm_end.
*/
orig_pte = pte = pte_offset_map_lock(walk->mm, pmdp, addr, &ptl);
+ if (!pte) {
+ walk->action = ACTION_AGAIN;
+ return err;
+ }
for (; addr < end; pte++, addr += PAGE_SIZE) {
pagemap_entry_t pme;
- pme = pte_to_pagemap_entry(pm, vma, addr, *pte);
+ pme = pte_to_pagemap_entry(pm, vma, addr, ptep_get(pte));
err = add_to_pagemap(addr, &pme, pm);
if (err)
break;
@@ -1689,23 +1690,23 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
/* watch out for wraparound */
start_vaddr = end_vaddr;
if (svpfn <= (ULONG_MAX >> PAGE_SHIFT)) {
+ unsigned long end;
+
ret = mmap_read_lock_killable(mm);
if (ret)
goto out_free;
start_vaddr = untagged_addr_remote(mm, svpfn << PAGE_SHIFT);
mmap_read_unlock(mm);
+
+ end = start_vaddr + ((count / PM_ENTRY_BYTES) << PAGE_SHIFT);
+ if (end >= start_vaddr && end < mm->task_size)
+ end_vaddr = end;
}
/* Ensure the address is inside the task */
if (start_vaddr > mm->task_size)
start_vaddr = end_vaddr;
- /*
- * The odds are that this will stop walking way
- * before end_vaddr, because the length of the
- * user buffer is tracked in "pm", and the walk
- * will stop when we hit the end of the buffer.
- */
ret = 0;
while (count && (start_vaddr < end_vaddr)) {
int len;
@@ -1887,16 +1888,18 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
spin_unlock(ptl);
return 0;
}
-
- if (pmd_trans_unstable(pmd))
- return 0;
#endif
orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
+ if (!pte) {
+ walk->action = ACTION_AGAIN;
+ return 0;
+ }
do {
- struct page *page = can_gather_numa_stats(*pte, vma, addr);
+ pte_t ptent = ptep_get(pte);
+ struct page *page = can_gather_numa_stats(ptent, vma, addr);
if (!page)
continue;
- gather_stats(page, md, pte_dirty(*pte), 1);
+ gather_stats(page, md, pte_dirty(ptent), 1);
} while (pte++, addr += PAGE_SIZE, addr != end);
pte_unmap_unlock(orig_pte, ptl);
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 0ec35072a8e5..2c8b62265981 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -51,7 +51,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
sbytes += kobjsize(mm);
else
bytes += kobjsize(mm);
-
+
if (current->fs && current->fs->users > 1)
sbytes += kobjsize(current->fs);
else
@@ -69,13 +69,13 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
bytes += kobjsize(current); /* includes kernel stack */
+ mmap_read_unlock(mm);
+
seq_printf(m,
"Mem:\t%8lu bytes\n"
"Slack:\t%8lu bytes\n"
"Shared:\t%8lu bytes\n",
bytes, slack, sbytes);
-
- mmap_read_unlock(mm);
}
unsigned long task_vsize(struct mm_struct *mm)
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 03f5963914a1..cb80a7703d58 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -877,7 +877,7 @@ static int __init merge_note_headers_elf64(char *elfptr, size_t *elfsz,
phdr.p_offset = roundup(note_off, PAGE_SIZE);
phdr.p_vaddr = phdr.p_paddr = 0;
phdr.p_filesz = phdr.p_memsz = phdr_sz;
- phdr.p_align = 0;
+ phdr.p_align = 4;
/* Add merged PT_NOTE program header*/
tmp = elfptr + sizeof(Elf64_Ehdr);
@@ -1068,7 +1068,7 @@ static int __init merge_note_headers_elf32(char *elfptr, size_t *elfsz,
phdr.p_offset = roundup(note_off, PAGE_SIZE);
phdr.p_vaddr = phdr.p_paddr = 0;
phdr.p_filesz = phdr.p_memsz = phdr_sz;
- phdr.p_align = 0;
+ phdr.p_align = 4;
/* Add merged PT_NOTE program header*/
tmp = elfptr + sizeof(Elf32_Ehdr);
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-08 12:34:55 +0300