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authorAnand Jain <anand.jain@oracle.com>2018-03-07 10:29:18 +0100
committerDavid Sterba <dsterba@suse.com>2018-03-31 01:26:50 +0200
commit7c829b722dffb22aaf9e3ea1b1d88dac49bd0768 (patch)
tree1dba1902eb1013a71c51ae2a4bb594b55729be4c
parentbtrfs: open code trivial helper btrfs_page_exists_in_range (diff)
downloadlinux-7c829b722dffb22aaf9e3ea1b1d88dac49bd0768.tar.xz
linux-7c829b722dffb22aaf9e3ea1b1d88dac49bd0768.zip
btrfs: add define for oldest generation
Some functions can filter metadata by the generation. Add a define that will annotate such arguments. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> [ update changelog ] Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r--fs/btrfs/ctree.h2
-rw-r--r--fs/btrfs/ioctl.c2
-rw-r--r--fs/btrfs/tree-defrag.c5
-rw-r--r--fs/btrfs/uuid-tree.c2
-rw-r--r--fs/btrfs/volumes.c3
5 files changed, 8 insertions, 6 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index f4926dc9649f..15bf111cd5c5 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -66,6 +66,8 @@ struct btrfs_ordered_sum;
#define BTRFS_MAX_LEVEL 8
+#define BTRFS_OLDEST_GENERATION 0ULL
+
#define BTRFS_COMPAT_EXTENT_TREE_V0
/*
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index c5a559105949..ba403c00982c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2600,7 +2600,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
range->len = (u64)-1;
}
ret = btrfs_defrag_file(file_inode(file), file,
- range, 0, 0);
+ range, BTRFS_OLDEST_GENERATION, 0);
if (ret > 0)
ret = 0;
kfree(range);
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index cb65089127cc..c09dbe4bd6e7 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -39,7 +39,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
int level;
int next_key_ret = 0;
u64 last_ret = 0;
- u64 min_trans = 0;
if (root->fs_info->extent_root == root) {
/*
@@ -81,7 +80,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
path->keep_locks = 1;
- ret = btrfs_search_forward(root, &key, path, min_trans);
+ ret = btrfs_search_forward(root, &key, path, BTRFS_OLDEST_GENERATION);
if (ret < 0)
goto out;
if (ret > 0) {
@@ -130,7 +129,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
*/
path->slots[1] = btrfs_header_nritems(path->nodes[1]);
next_key_ret = btrfs_find_next_key(root, path, &key, 1,
- min_trans);
+ BTRFS_OLDEST_GENERATION);
if (next_key_ret == 0) {
memcpy(&root->defrag_progress, &key, sizeof(key));
ret = -EAGAIN;
diff --git a/fs/btrfs/uuid-tree.c b/fs/btrfs/uuid-tree.c
index 726f928238d0..9916f03430bc 100644
--- a/fs/btrfs/uuid-tree.c
+++ b/fs/btrfs/uuid-tree.c
@@ -282,7 +282,7 @@ int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info,
key.offset = 0;
again_search_slot:
- ret = btrfs_search_forward(root, &key, path, 0);
+ ret = btrfs_search_forward(root, &key, path, BTRFS_OLDEST_GENERATION);
if (ret) {
if (ret > 0)
ret = 0;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 1622d3b73771..1e72357bdfa8 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4208,7 +4208,8 @@ static int btrfs_uuid_scan_kthread(void *data)
key.offset = 0;
while (1) {
- ret = btrfs_search_forward(root, &key, path, 0);
+ ret = btrfs_search_forward(root, &key, path,
+ BTRFS_OLDEST_GENERATION);
if (ret) {
if (ret > 0)
ret = 0;