Revision 64165b1affc5bc16231ac971e66aae7d68d57f2c authored by Hugh Dickins on 19 April 2019, 00:50:09 UTC, committed by Linus Torvalds on 19 April 2019, 16:46:04 UTC
The old try_to_unuse() implementation was driven by find_next_to_unuse(),
which terminated as soon as all the swap had been freed.
Add inuse_pages checks now (alongside signal_pending()) to stop scanning
mms and swap_map once finished.
The same ought to be done in shmem_unuse() too, but never was before,
and needs a different interface: so leave it as is for now.
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1904081258200.1523@eggly.anvils
Fixes: b56a2d8af914 ("mm: rid swapoff of quadratic complexity")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Kelley Nielsen <kelleynnn@gmail.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vineeth Pillai <vpillai@digitalocean.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent dd862de
| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 361 bytes |
| compat.c | -rw-r--r-- | 2.2 KB |
| ipc_sysctl.c | -rw-r--r-- | 5.9 KB |
| mq_sysctl.c | -rw-r--r-- | 2.9 KB |
| mqueue.c | -rw-r--r-- | 40.1 KB |
| msg.c | -rw-r--r-- | 30.5 KB |
| msgutil.c | -rw-r--r-- | 3.6 KB |
| namespace.c | -rw-r--r-- | 4.6 KB |
| sem.c | -rw-r--r-- | 62.1 KB |
| shm.c | -rw-r--r-- | 43.0 KB |
| syscall.c | -rw-r--r-- | 5.1 KB |
| util.c | -rw-r--r-- | 22.1 KB |
| util.h | -rw-r--r-- | 8.9 KB |
Computing file changes ...
