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authorChris Mason <chris.mason@oracle.com>2007-10-19 10:39:41 -0400
committerChris Mason <chris.mason@oracle.com>2008-09-25 11:03:57 -0400
commitff190c0c004d8e51195c7bcf5a8490aeefccbce0 (patch)
tree13a5e66606cdc1cae192758420fb4516b934e2f1 /fs/btrfs/extent_map.c
parent3685f791659c9f21b763ee1702ac8ca58bc20f81 (diff)
downloadop-kernel-dev-ff190c0c004d8e51195c7bcf5a8490aeefccbce0.zip
op-kernel-dev-ff190c0c004d8e51195c7bcf5a8490aeefccbce0.tar.gz
Btrfs: Avoid recursive KM_USER1 mappings in copy_extent_buffer
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_map.c')
-rw-r--r--fs/btrfs/extent_map.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index caaf0bf..a613792 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -2586,9 +2586,9 @@ void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
cur = min(len, (unsigned long)(PAGE_CACHE_SIZE - offset));
- kaddr = kmap_atomic(page, KM_USER1);
+ kaddr = kmap_atomic(page, KM_USER0);
read_extent_buffer(src, kaddr + offset, src_offset, cur);
- kunmap_atomic(kaddr, KM_USER1);
+ kunmap_atomic(kaddr, KM_USER0);
src_offset += cur;
len -= cur;
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