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Btrfs: add generation field to file extent 

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-03-27 09:16:29 -04:00 committed by David Woodhouse
parent 9a6f11ed8f
commit 71951f35a6
2 changed files with 14 additions and 0 deletions
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13
fs/btrfs/ctree.h
View File

@ -192,6 +192,7 @@ struct btrfs_root_item {
} __attribute__ ((__packed__));
struct btrfs_file_extent_item {
__le64 generation;
/*
* disk space consumed by the extent, checksum blocks are included
* in these numbers
@ -764,6 +765,18 @@ static inline void btrfs_set_file_extent_disk_blocknr(struct
e->disk_blocknr = cpu_to_le64(val);
}
static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e)
{
return le64_to_cpu(e->generation);
}
static inline void btrfs_set_file_extent_generation(struct
btrfs_file_extent_item *e,
u64 val)
{
e->generation = cpu_to_le64(val);
}
static inline u64 btrfs_file_extent_disk_num_blocks(struct
btrfs_file_extent_item *e)
{

1
fs/btrfs/file-item.c
View File

@ -32,6 +32,7 @@ int btrfs_alloc_file_extent(struct btrfs_trans_handle *trans,
btrfs_set_file_extent_disk_num_blocks(item, ins.offset);
btrfs_set_file_extent_offset(item, 0);
btrfs_set_file_extent_num_blocks(item, ins.offset);
btrfs_set_file_extent_generation(item, trans->transid);
mark_buffer_dirty(path.nodes[0]);
*result = ins.objectid;
btrfs_release_path(root, &path);