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Btrfs: Add data=ordered support

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This forces file data extents down the disk along with the metadata that
references them.  The current implementation is fairly simple, and just
writes out all of the dirty pages in an inode before the commit.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-01-08 15:46:30 -05:00
parent e4204dedbb
commit dc17ff8f11
13 changed files with 387 additions and 28 deletions
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6
fs/btrfs/ctree.c
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@@ -221,7 +221,9 @@ int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct extent_buffer **cow_ret)
{
u64 search_start;
u64 header_trans;
int ret;
if (trans->transaction != root->fs_info->running_transaction) {
printk(KERN_CRIT "trans %Lu running %Lu\n", trans->transid,
root->fs_info->running_transaction->transid);
@@ -232,7 +234,9 @@ int btrfs_cow_block(struct btrfs_trans_handle *trans,
root->fs_info->generation);
WARN_ON(1);
}
if (btrfs_header_generation(buf) == trans->transid) {
header_trans = btrfs_header_generation(buf);
if (header_trans == trans->transid) {
*cow_ret = buf;
return 0;
}