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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-08-15 12:22:13 +0400
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-09-14 13:27:15 +0400
commitbd8169efae8bdd292675c386010f6b35f0771057 (patch)
treeaea73bd670910874eb78fd1f2c8ce8b2a494dfcb /fs/nilfs2/dat.c
parent7a102b09232be1ad7c180dfd1f46c7aa95dff1e0 (diff)
downloadlinux-bd8169efae8bdd292675c386010f6b35f0771057.tar.xz
nilfs2: add update functions of virtual block address to dat
This is a preparation for the successive cleanup ("nilfs2: allow btree to directly call dat operations"). This adds functions bundling a few operations to change an entry of virtual block address on the dat file. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/dat.c')
-rw-r--r--fs/nilfs2/dat.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index 1cfcc1a0fdf1..1ff8e15bd36b 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -211,6 +211,37 @@ void nilfs_dat_abort_end(struct inode *dat, struct nilfs_palloc_req *req)
nilfs_dat_abort_entry(dat, req);
}
+int nilfs_dat_prepare_update(struct inode *dat,
+ struct nilfs_palloc_req *oldreq,
+ struct nilfs_palloc_req *newreq)
+{
+ int ret;
+
+ ret = nilfs_dat_prepare_end(dat, oldreq);
+ if (!ret) {
+ ret = nilfs_dat_prepare_alloc(dat, newreq);
+ if (ret < 0)
+ nilfs_dat_abort_end(dat, oldreq);
+ }
+ return ret;
+}
+
+void nilfs_dat_commit_update(struct inode *dat,
+ struct nilfs_palloc_req *oldreq,
+ struct nilfs_palloc_req *newreq, int dead)
+{
+ nilfs_dat_commit_end(dat, oldreq, dead);
+ nilfs_dat_commit_alloc(dat, newreq);
+}
+
+void nilfs_dat_abort_update(struct inode *dat,
+ struct nilfs_palloc_req *oldreq,
+ struct nilfs_palloc_req *newreq)
+{
+ nilfs_dat_abort_end(dat, oldreq);
+ nilfs_dat_abort_alloc(dat, newreq);
+}
+
/**
* nilfs_dat_mark_dirty -
* @dat: DAT file inode