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path: root/fs/btrfs/tree-log.c
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Diffstat (limited to 'fs/btrfs/tree-log.c')
-rw-r--r--fs/btrfs/tree-log.c136
1 files changed, 58 insertions, 78 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 8a6cc600bf18..6f757361db53 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -559,7 +559,7 @@ static noinline struct inode *read_one_inode(struct btrfs_root *root,
key.objectid = objectid;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
- inode = btrfs_iget(root->fs_info->sb, &key, root, NULL);
+ inode = btrfs_iget(root->fs_info->sb, &key, root);
if (IS_ERR(inode))
inode = NULL;
return inode;
@@ -945,54 +945,32 @@ static noinline int backref_in_log(struct btrfs_root *log,
const char *name, int namelen)
{
struct btrfs_path *path;
- struct btrfs_inode_ref *ref;
- unsigned long ptr;
- unsigned long ptr_end;
- unsigned long name_ptr;
- int found_name_len;
- int item_size;
int ret;
- int match = 0;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
ret = btrfs_search_slot(NULL, log, key, path, 0, 0);
- if (ret != 0)
+ if (ret < 0) {
goto out;
-
- ptr = btrfs_item_ptr_offset(path->nodes[0], path->slots[0]);
-
- if (key->type == BTRFS_INODE_EXTREF_KEY) {
- if (btrfs_find_name_in_ext_backref(path->nodes[0],
- path->slots[0],
- ref_objectid,
- name, namelen))
- match = 1;
-
+ } else if (ret == 1) {
+ ret = 0;
goto out;
}
- item_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
- ptr_end = ptr + item_size;
- while (ptr < ptr_end) {
- ref = (struct btrfs_inode_ref *)ptr;
- found_name_len = btrfs_inode_ref_name_len(path->nodes[0], ref);
- if (found_name_len == namelen) {
- name_ptr = (unsigned long)(ref + 1);
- ret = memcmp_extent_buffer(path->nodes[0], name,
- name_ptr, namelen);
- if (ret == 0) {
- match = 1;
- goto out;
- }
- }
- ptr = (unsigned long)(ref + 1) + found_name_len;
- }
+ if (key->type == BTRFS_INODE_EXTREF_KEY)
+ ret = !!btrfs_find_name_in_ext_backref(path->nodes[0],
+ path->slots[0],
+ ref_objectid,
+ name, namelen);
+ else
+ ret = !!btrfs_find_name_in_backref(path->nodes[0],
+ path->slots[0],
+ name, namelen);
out:
btrfs_free_path(path);
- return match;
+ return ret;
}
static inline int __add_inode_ref(struct btrfs_trans_handle *trans,
@@ -1050,10 +1028,13 @@ again:
(unsigned long)(victim_ref + 1),
victim_name_len);
- if (!backref_in_log(log_root, &search_key,
- parent_objectid,
- victim_name,
- victim_name_len)) {
+ ret = backref_in_log(log_root, &search_key,
+ parent_objectid, victim_name,
+ victim_name_len);
+ if (ret < 0) {
+ kfree(victim_name);
+ return ret;
+ } else if (!ret) {
inc_nlink(&inode->vfs_inode);
btrfs_release_path(path);
@@ -1115,10 +1096,12 @@ again:
search_key.offset = btrfs_extref_hash(parent_objectid,
victim_name,
victim_name_len);
- ret = 0;
- if (!backref_in_log(log_root, &search_key,
- parent_objectid, victim_name,
- victim_name_len)) {
+ ret = backref_in_log(log_root, &search_key,
+ parent_objectid, victim_name,
+ victim_name_len);
+ if (ret < 0) {
+ return ret;
+ } else if (!ret) {
ret = -ENOENT;
victim_parent = read_one_inode(root,
parent_objectid);
@@ -1885,30 +1868,6 @@ static noinline int insert_one_name(struct btrfs_trans_handle *trans,
}
/*
- * Return true if an inode reference exists in the log for the given name,
- * inode and parent inode.
- */
-static bool name_in_log_ref(struct btrfs_root *log_root,
- const char *name, const int name_len,
- const u64 dirid, const u64 ino)
-{
- struct btrfs_key search_key;
-
- search_key.objectid = ino;
- search_key.type = BTRFS_INODE_REF_KEY;
- search_key.offset = dirid;
- if (backref_in_log(log_root, &search_key, dirid, name, name_len))
- return true;
-
- search_key.type = BTRFS_INODE_EXTREF_KEY;
- search_key.offset = btrfs_extref_hash(dirid, name, name_len);
- if (backref_in_log(log_root, &search_key, dirid, name, name_len))
- return true;
-
- return false;
-}
-
-/*
* take a single entry in a log directory item and replay it into
* the subvolume.
*
@@ -2024,8 +1983,31 @@ out:
return ret;
insert:
- if (name_in_log_ref(root->log_root, name, name_len,
- key->objectid, log_key.objectid)) {
+ /*
+ * Check if the inode reference exists in the log for the given name,
+ * inode and parent inode
+ */
+ found_key.objectid = log_key.objectid;
+ found_key.type = BTRFS_INODE_REF_KEY;
+ found_key.offset = key->objectid;
+ ret = backref_in_log(root->log_root, &found_key, 0, name, name_len);
+ if (ret < 0) {
+ goto out;
+ } else if (ret) {
+ /* The dentry will be added later. */
+ ret = 0;
+ update_size = false;
+ goto out;
+ }
+
+ found_key.objectid = log_key.objectid;
+ found_key.type = BTRFS_INODE_EXTREF_KEY;
+ found_key.offset = key->objectid;
+ ret = backref_in_log(root->log_root, &found_key, key->objectid, name,
+ name_len);
+ if (ret < 0) {
+ goto out;
+ } else if (ret) {
/* The dentry will be added later. */
ret = 0;
update_size = false;
@@ -2869,7 +2851,7 @@ static int walk_log_tree(struct btrfs_trans_handle *trans,
level = btrfs_header_level(log->node);
orig_level = level;
path->nodes[level] = log->node;
- extent_buffer_get(log->node);
+ atomic_inc(&log->node->refs);
path->slots[level] = 0;
while (1) {
@@ -4983,7 +4965,7 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
key.objectid = ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
- inode = btrfs_iget(fs_info->sb, &key, root, NULL);
+ inode = btrfs_iget(fs_info->sb, &key, root);
/*
* If the other inode that had a conflicting dir entry was
* deleted in the current transaction, we need to log its parent
@@ -4993,8 +4975,7 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
ret = PTR_ERR(inode);
if (ret == -ENOENT) {
key.objectid = parent;
- inode = btrfs_iget(fs_info->sb, &key, root,
- NULL);
+ inode = btrfs_iget(fs_info->sb, &key, root);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
} else {
@@ -5699,7 +5680,7 @@ process_leaf:
continue;
btrfs_release_path(path);
- di_inode = btrfs_iget(fs_info->sb, &di_key, root, NULL);
+ di_inode = btrfs_iget(fs_info->sb, &di_key, root);
if (IS_ERR(di_inode)) {
ret = PTR_ERR(di_inode);
goto next_dir_inode;
@@ -5825,8 +5806,7 @@ static int btrfs_log_all_parents(struct btrfs_trans_handle *trans,
cur_offset = item_size;
}
- dir_inode = btrfs_iget(fs_info->sb, &inode_key,
- root, NULL);
+ dir_inode = btrfs_iget(fs_info->sb, &inode_key, root);
/*
* If the parent inode was deleted, return an error to
* fallback to a transaction commit. This is to prevent
@@ -5900,7 +5880,7 @@ static int log_new_ancestors(struct btrfs_trans_handle *trans,
search_key.objectid = found_key.offset;
search_key.type = BTRFS_INODE_ITEM_KEY;
search_key.offset = 0;
- inode = btrfs_iget(fs_info->sb, &search_key, root, NULL);
+ inode = btrfs_iget(fs_info->sb, &search_key, root);
if (IS_ERR(inode))
return PTR_ERR(inode);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-28 04:43:16 +0300