diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-11 11:18:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-11 11:18:04 -0700 |
| commit | 3dd0130f2430decf0cb001b452824515436986d2 (patch) | |
| tree | 3d3bb4ca9c5fe7372eb499bf9983d514ec2f5477 /mm/khugepaged.c | |
| parent | 5b697f86f9f136d200c9827d6eca0437b7eb96cf (diff) | |
| parent | 4aab2be0983031a05cb4a19696c9da5749523426 (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"Five fixes.
Subsystems affected by this patch series: MAINTAINERS, mm/pagemap,
mm/swap, and mm/hugetlb"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged
mm: validate inode in mapping_set_error()
mm: mmap: Fix general protection fault in unlink_file_vma()
MAINTAINERS: Antoine Tenart's email address
MAINTAINERS: change hardening mailing list
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 3a494cfa56d2..58b0d9c502a1 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -56,6 +56,9 @@ enum scan_result { #define CREATE_TRACE_POINTS #include <trace/events/huge_memory.h> +static struct task_struct *khugepaged_thread __read_mostly; +static DEFINE_MUTEX(khugepaged_mutex); + /* default scan 8*512 pte (or vmas) every 30 second */ static unsigned int khugepaged_pages_to_scan __read_mostly; static unsigned int khugepaged_pages_collapsed; @@ -2304,8 +2307,6 @@ static void set_recommended_min_free_kbytes(void) int start_stop_khugepaged(void) { - static struct task_struct *khugepaged_thread __read_mostly; - static DEFINE_MUTEX(khugepaged_mutex); int err = 0; mutex_lock(&khugepaged_mutex); @@ -2332,3 +2333,11 @@ fail: mutex_unlock(&khugepaged_mutex); return err; } + +void khugepaged_min_free_kbytes_update(void) +{ + mutex_lock(&khugepaged_mutex); + if (khugepaged_enabled() && khugepaged_thread) + set_recommended_min_free_kbytes(); + mutex_unlock(&khugepaged_mutex); +} |