diff options
author | alc <alc@FreeBSD.org> | 2003-01-14 06:57:03 +0000 |
---|---|---|
committer | alc <alc@FreeBSD.org> | 2003-01-14 06:57:03 +0000 |
commit | c7ca47fcc7cd393f626b58b6b5e5c6d1c05494d9 (patch) | |
tree | 24db1344150e130dd55fba25b85388b5264f1cb1 /sys/kern/vfs_bio.c | |
parent | 8f97c15f80b1b5c708048e55765ff56df527eb82 (diff) | |
download | FreeBSD-src-c7ca47fcc7cd393f626b58b6b5e5c6d1c05494d9.zip FreeBSD-src-c7ca47fcc7cd393f626b58b6b5e5c6d1c05494d9.tar.gz |
- Update vm_pageout_deficit using atomic operations. It's a simple
counter outside the scope of existing locks.
- Eliminate a redundant clearing of vm_pageout_deficit.
Diffstat (limited to 'sys/kern/vfs_bio.c')
-rw-r--r-- | sys/kern/vfs_bio.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index a4e5b6e..3293ab4 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -2757,7 +2757,8 @@ allocbuf(struct buf *bp, int size) VM_ALLOC_SYSTEM | VM_ALLOC_WIRED); if (m == NULL) { VM_WAIT; - vm_pageout_deficit += desiredpages - bp->b_npages; + atomic_add_int(&vm_pageout_deficit, + desiredpages - bp->b_npages); } else { vm_page_lock_queues(); vm_page_wakeup(m); @@ -3488,7 +3489,8 @@ tryagain: VM_ALLOC_SYSTEM | VM_ALLOC_WIRED); vm_object_unlock(kernel_object); if (!p) { - vm_pageout_deficit += (to - from) >> PAGE_SHIFT; + atomic_add_int(&vm_pageout_deficit, + (to - from) >> PAGE_SHIFT); VM_WAIT; goto tryagain; } |