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| author | alc <alc@FreeBSD.org> | 2003-04-26 07:42:24 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2003-04-26 07:42:24 +0000 |
| commit | 3db24e0c46d04ee6e5efa587b6fa794ea3d187bd (patch) | |
| tree | 2fe1d1ce2475ff4ae3e4d3c76855054f0f335a73 /sys/kern/vfs_bio.c | |
| parent | a1831ac622ac11b41957f10d1d89edb20c206c2e (diff) | |
| download | FreeBSD-src-3db24e0c46d04ee6e5efa587b6fa794ea3d187bd.zip FreeBSD-src-3db24e0c46d04ee6e5efa587b6fa794ea3d187bd.tar.gz | |
- Lock the vm_object when performing vm_page_alloc() in allocbuf().
Diffstat (limited to 'sys/kern/vfs_bio.c')
| -rw-r--r-- | sys/kern/vfs_bio.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index 00d3c0a..8006f99 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -2816,6 +2816,7 @@ allocbuf(struct buf *bp, int size) vp = bp->b_vp; obj = bp->b_object; + VM_OBJECT_LOCK(obj); while (bp->b_npages < desiredpages) { vm_page_t m; vm_pindex_t pi; @@ -2833,7 +2834,9 @@ allocbuf(struct buf *bp, int size) if (m == NULL) { atomic_add_int(&vm_pageout_deficit, desiredpages - bp->b_npages); + VM_OBJECT_UNLOCK(obj); VM_WAIT; + VM_OBJECT_LOCK(obj); } else { vm_page_lock_queues(); vm_page_wakeup(m); @@ -2876,6 +2879,7 @@ allocbuf(struct buf *bp, int size) bp->b_pages[bp->b_npages] = m; ++bp->b_npages; } + VM_OBJECT_UNLOCK(obj); /* * Step 2. We've loaded the pages into the buffer, |
