diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 4fe7e3aa02e2..1d64dc145295 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -949,6 +949,17 @@ redo: goto unlock_both; } + /* Make sure the dirty bit is up to date */ + if (try_to_unmap(page, 1) == SWAP_FAIL) { + rc = -EPERM; + goto unlock_both; + } + + if (page_mapcount(page)) { + rc = -EAGAIN; + goto unlock_both; + } + /* * Default handling if a filesystem does not provide * a migration function. We can only migrate clean |