Author: alc
Date: Sat Oct 3 17:04:52 2015
New Revision: 288617
URL: https://svnweb.freebsd.org/changeset/base/288617
Log:
Perform a single batched update to the object's paging-in-progress count
rather than updating it for each page.
Modified:
head/sys/kern/vfs_bio.c
Modified: head/sys/kern/vfs_bio.c
==============================================================================
--- head/sys/kern/vfs_bio.c Sat Oct 3 16:37:38 2015 (r288616)
+++ head/sys/kern/vfs_bio.c Sat Oct 3 17:04:52 2015 (r288617)
@@ -2050,11 +2050,10 @@ vfs_vmio_iodone(struct buf *bp)
(intmax_t)foff, (uintmax_t)m->pindex));
vm_page_sunbusy(m);
- vm_object_pip_subtract(obj, 1);
foff = (foff + PAGE_SIZE) & ~(off_t)PAGE_MASK;
iosize -= resid;
}
- vm_object_pip_wakeupn(obj, 0);
+ vm_object_pip_wakeupn(obj, bp->b_npages);
VM_OBJECT_WUNLOCK(obj);
if (bogus && buf_mapped(bp)) {
BUF_CHECK_MAPPED(bp);
@@ -3923,10 +3922,9 @@ vfs_unbusy_pages(struct buf *bp)
} else
BUF_CHECK_UNMAPPED(bp);
}
- vm_object_pip_subtract(obj, 1);
vm_page_sunbusy(m);
}
- vm_object_pip_wakeupn(obj, 0);
+ vm_object_pip_wakeupn(obj, bp->b_npages);
VM_OBJECT_WUNLOCK(obj);
}
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