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| author | Zheng Yan <zheng.yan@oracle.com> | 2008-09-23 13:14:14 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:07 -0400 |
| commit | 31840ae1a6b433ca0e6a8d341756ff478bbf959e (patch) | |
| tree | 9343db596aec175e9640aa2800b80f01496d7047 /fs/btrfs/extent_io.c | |
| parent | 1c2308f8e7d8491467e0095af2b01500f1b70819 (diff) | |
| download | op-kernel-dev-31840ae1a6b433ca0e6a8d341756ff478bbf959e.zip op-kernel-dev-31840ae1a6b433ca0e6a8d341756ff478bbf959e.tar.gz | |
Btrfs: Full back reference support
This patch makes the back reference system to explicit record the
location of parent node for all types of extents. The location of
parent node is placed into the offset field of backref key. Every
time a tree block is balanced, the back references for the affected
lower level extents are updated.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 8624f3e..58ad258 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2201,9 +2201,10 @@ retry: } if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) mapping->writeback_index = index; - +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26) if (wbc->range_cont) wbc->range_start = index << PAGE_CACHE_SHIFT; +#endif return ret; } EXPORT_SYMBOL(extent_write_cache_pages); |
