diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index d29b2bdb9e03..10f9c59aed55 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -865,6 +865,15 @@ static unsigned long shrink_page_list(struct list_head *page_list, if (PageDirty(page)) { nr_dirty++; + /* + * Only kswapd can writeback filesystem pages to + * avoid risk of stack overflow + */ + if (page_is_file_cache(page) && !current_is_kswapd()) { + inc_zone_page_state(page, NR_VMSCAN_WRITE_SKIP); + goto keep_locked; + } + if (references == PAGEREF_RECLAIM_CLEAN) goto keep_locked; if (!may_enter_fs) |