diff options
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index 61c792f916fa..f6296ee25014 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -359,6 +359,7 @@ int swap_readpage(struct page *page, bool synchronous) struct bio *bio; int ret = 0; struct swap_info_struct *sis = page_swap_info(page); + bool workingset = PageWorkingset(page); unsigned long pflags; VM_BUG_ON_PAGE(!PageSwapCache(page) && !synchronous, page); @@ -370,7 +371,8 @@ int swap_readpage(struct page *page, bool synchronous) * or the submitting cgroup IO-throttled, submission can be a * significant part of overall IO time. */ - psi_memstall_enter(&pflags); + if (workingset) + psi_memstall_enter(&pflags); delayacct_swapin_start(); if (frontswap_load(page) == 0) { @@ -431,7 +433,8 @@ int swap_readpage(struct page *page, bool synchronous) bio_put(bio); out: - psi_memstall_leave(&pflags); + if (workingset) + psi_memstall_leave(&pflags); delayacct_swapin_end(); return ret; } |