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| author | Josef Bacik <jbacik@fusionio.com> | 2012-12-03 10:31:19 -0500 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2012-12-16 20:46:23 -0500 |
| commit | b493968096944a11422c4d80fb87af537ca1cac7 (patch) | |
| tree | e1ab00ec2a527615c2f17c2665e6597fc3b81c7d /fs/btrfs/file.c | |
| parent | b812ce28796f746f14ba6cc451250c422db447b2 (diff) | |
| download | kernel_goldelico_gta04-b493968096944a11422c4d80fb87af537ca1cac7.zip kernel_goldelico_gta04-b493968096944a11422c4d80fb87af537ca1cac7.tar.gz kernel_goldelico_gta04-b493968096944a11422c4d80fb87af537ca1cac7.tar.bz2 | |
Btrfs: keep track of the extents original block length
If we've written to a prealloc extent we need to know the original block len
for the extent. We can't figure this out currently since ->block_len is
just set to the extent length. So introduce ->orig_block_len so that we
know how many bytes were in the original extent for proper extent logging
that future patches will need. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/file.c')
| -rw-r--r-- | fs/btrfs/file.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 7f4654a..6810145 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -588,6 +588,8 @@ void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, split->block_len = em->block_len; else split->block_len = split->len; + split->orig_block_len = max(split->block_len, + em->orig_block_len); split->generation = gen; split->bdev = em->bdev; split->flags = flags; @@ -609,6 +611,8 @@ void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, split->flags = flags; split->compress_type = em->compress_type; split->generation = gen; + split->orig_block_len = max(em->block_len, + em->orig_block_len); if (compressed) { split->block_len = em->block_len; @@ -1838,6 +1842,7 @@ out: hole_em->block_start = EXTENT_MAP_HOLE; hole_em->block_len = 0; + hole_em->orig_block_len = 0; hole_em->bdev = root->fs_info->fs_devices->latest_bdev; hole_em->compress_type = BTRFS_COMPRESS_NONE; hole_em->generation = trans->transid; |