diff options
Diffstat (limited to 'sys/fs/tmpfs')
| -rw-r--r-- | sys/fs/tmpfs/tmpfs_vnops.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/sys/fs/tmpfs/tmpfs_vnops.c b/sys/fs/tmpfs/tmpfs_vnops.c index c17efff..3d3755d 100644 --- a/sys/fs/tmpfs/tmpfs_vnops.c +++ b/sys/fs/tmpfs/tmpfs_vnops.c @@ -516,8 +516,16 @@ tmpfs_mappedread(vm_object_t vobj, vm_object_t tobj, size_t len, struct uio *uio lookupvpg: if (((m = vm_page_lookup(vobj, idx)) != NULL) && vm_page_is_valid(m, offset, tlen)) { - if (vm_page_sleep_if_busy(m, FALSE, "tmfsmr")) + if ((m->oflags & VPO_BUSY) != 0) { + /* + * Reference the page before unlocking and sleeping so + * that the page daemon is less likely to reclaim it. + */ + vm_page_lock_queues(); + vm_page_flag_set(m, PG_REFERENCED); + vm_page_sleep(m, "tmfsmr"); goto lookupvpg; + } vm_page_busy(m); VM_OBJECT_UNLOCK(vobj); error = uiomove_fromphys(&m, offset, tlen, uio); @@ -526,8 +534,16 @@ lookupvpg: VM_OBJECT_UNLOCK(vobj); return (error); } else if (m != NULL && uio->uio_segflg == UIO_NOCOPY) { - if (vm_page_sleep_if_busy(m, FALSE, "tmfsmr")) + if ((m->oflags & VPO_BUSY) != 0) { + /* + * Reference the page before unlocking and sleeping so + * that the page daemon is less likely to reclaim it. + */ + vm_page_lock_queues(); + vm_page_flag_set(m, PG_REFERENCED); + vm_page_sleep(m, "tmfsmr"); goto lookupvpg; + } vm_page_busy(m); VM_OBJECT_UNLOCK(vobj); sched_pin(); @@ -627,8 +643,16 @@ tmpfs_mappedwrite(vm_object_t vobj, vm_object_t tobj, size_t len, struct uio *ui lookupvpg: if (((vpg = vm_page_lookup(vobj, idx)) != NULL) && vm_page_is_valid(vpg, offset, tlen)) { - if (vm_page_sleep_if_busy(vpg, FALSE, "tmfsmw")) + if ((vpg->oflags & VPO_BUSY) != 0) { + /* + * Reference the page before unlocking and sleeping so + * that the page daemon is less likely to reclaim it. + */ + vm_page_lock_queues(); + vm_page_flag_set(vpg, PG_REFERENCED); + vm_page_sleep(vpg, "tmfsmw"); goto lookupvpg; + } vm_page_busy(vpg); vm_page_lock_queues(); vm_page_undirty(vpg); |
