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| author | Chris Mason <chris.mason@oracle.com> | 2007-10-19 16:39:41 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 17:03:57 +0200 |
| commit | ff190c0c004d8e51195c7bcf5a8490aeefccbce0 (patch) | |
| tree | 13a5e66606cdc1cae192758420fb4516b934e2f1 /fs/btrfs | |
| parent | Btrfs: CPU usage optimizations in push and the extent_map code (diff) | |
| download | linux-ff190c0c004d8e51195c7bcf5a8490aeefccbce0.tar.xz linux-ff190c0c004d8e51195c7bcf5a8490aeefccbce0.zip | |
Btrfs: Avoid recursive KM_USER1 mappings in copy_extent_buffer
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/extent_map.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index caaf0bf0e059..a61379230dd2 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; |