* [PATCH 1/3] btrfs: simplify root lookup by id
2020-05-15 17:35 [PATCH 0/3] Tree and inode lookup cleanups David Sterba
@ 2020-05-15 17:35 ` David Sterba
2020-05-15 17:35 ` [PATCH 2/3] btrfs: open code read_fs_root David Sterba
2020-05-15 17:35 ` [PATCH 3/3] btrfs: simplify iget helpers David Sterba
2 siblings, 0 replies; 4+ messages in thread
From: David Sterba @ 2020-05-15 17:35 UTC (permalink / raw)
To: linux-btrfs; +Cc: David Sterba
The main function to lookup a root by its id btrfs_get_fs_root takes the
whole key, while only using the objectid. The value of offset is preset
to (u64)-1 but not actually used until btrfs_find_root that does the
actual search.
Switch btrfs_get_fs_root to use only objectid and remove all local
variables that existed just for the lookup. The actual key for search is
set up in btrfs_get_fs_root, reusing another key variable.
Signed-off-by: David Sterba <dsterba@suse.com>
---
fs/btrfs/backref.c | 13 ++-----------
fs/btrfs/disk-io.c | 35 ++++++++++++++++-------------------
fs/btrfs/disk-io.h | 3 +--
fs/btrfs/export.c | 6 +-----
fs/btrfs/file.c | 6 +-----
fs/btrfs/inode.c | 2 +-
fs/btrfs/ioctl.c | 28 ++++++----------------------
fs/btrfs/relocation.c | 8 +-------
fs/btrfs/root-tree.c | 12 +++++-------
fs/btrfs/scrub.c | 6 +-----
fs/btrfs/send.c | 15 ++++-----------
fs/btrfs/super.c | 5 +----
fs/btrfs/transaction.c | 2 +-
fs/btrfs/tree-log.c | 8 ++------
fs/btrfs/uuid-tree.c | 6 +-----
15 files changed, 44 insertions(+), 111 deletions(-)
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index ac3c34f47b56..67651d1a7bd6 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -538,18 +538,13 @@ static int resolve_indirect_ref(struct btrfs_fs_info *fs_info,
const u64 *extent_item_pos, bool ignore_offset)
{
struct btrfs_root *root;
- struct btrfs_key root_key;
struct extent_buffer *eb;
int ret = 0;
int root_level;
int level = ref->level;
struct btrfs_key search_key = ref->key_for_search;
- root_key.objectid = ref->root_id;
- root_key.type = BTRFS_ROOT_ITEM_KEY;
- root_key.offset = (u64)-1;
-
- root = btrfs_get_fs_root(fs_info, &root_key, false);
+ root = btrfs_get_fs_root(fs_info, ref->root_id, false);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out_free;
@@ -2690,16 +2685,12 @@ static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
struct btrfs_backref_edge *edge;
struct extent_buffer *eb;
struct btrfs_root *root;
- struct btrfs_key root_key;
struct rb_node *rb_node;
int level;
bool need_check = true;
int ret;
- root_key.objectid = ref_key->offset;
- root_key.type = BTRFS_ROOT_ITEM_KEY;
- root_key.offset = (u64)-1;
- root = btrfs_get_fs_root(fs_info, &root_key, false);
+ root = btrfs_get_fs_root(fs_info, ref_key->offset, false);
if (IS_ERR(root))
return PTR_ERR(root);
if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state))
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 714b57553ed6..f36d5d8eb8da 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1531,35 +1531,34 @@ void btrfs_free_fs_info(struct btrfs_fs_info *fs_info)
struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
- struct btrfs_key *location,
- bool check_ref)
+ u64 objectid, bool check_ref)
{
struct btrfs_root *root;
struct btrfs_path *path;
struct btrfs_key key;
int ret;
- if (location->objectid == BTRFS_ROOT_TREE_OBJECTID)
+ if (objectid == BTRFS_ROOT_TREE_OBJECTID)
return btrfs_grab_root(fs_info->tree_root);
- if (location->objectid == BTRFS_EXTENT_TREE_OBJECTID)
+ if (objectid == BTRFS_EXTENT_TREE_OBJECTID)
return btrfs_grab_root(fs_info->extent_root);
- if (location->objectid == BTRFS_CHUNK_TREE_OBJECTID)
+ if (objectid == BTRFS_CHUNK_TREE_OBJECTID)
return btrfs_grab_root(fs_info->chunk_root);
- if (location->objectid == BTRFS_DEV_TREE_OBJECTID)
+ if (objectid == BTRFS_DEV_TREE_OBJECTID)
return btrfs_grab_root(fs_info->dev_root);
- if (location->objectid == BTRFS_CSUM_TREE_OBJECTID)
+ if (objectid == BTRFS_CSUM_TREE_OBJECTID)
return btrfs_grab_root(fs_info->csum_root);
- if (location->objectid == BTRFS_QUOTA_TREE_OBJECTID)
+ if (objectid == BTRFS_QUOTA_TREE_OBJECTID)
return btrfs_grab_root(fs_info->quota_root) ?
fs_info->quota_root : ERR_PTR(-ENOENT);
- if (location->objectid == BTRFS_UUID_TREE_OBJECTID)
+ if (objectid == BTRFS_UUID_TREE_OBJECTID)
return btrfs_grab_root(fs_info->uuid_root) ?
fs_info->uuid_root : ERR_PTR(-ENOENT);
- if (location->objectid == BTRFS_FREE_SPACE_TREE_OBJECTID)
+ if (objectid == BTRFS_FREE_SPACE_TREE_OBJECTID)
return btrfs_grab_root(fs_info->free_space_root) ?
fs_info->free_space_root : ERR_PTR(-ENOENT);
again:
- root = btrfs_lookup_fs_root(fs_info, location->objectid);
+ root = btrfs_lookup_fs_root(fs_info, objectid);
if (root) {
if (check_ref && btrfs_root_refs(&root->root_item) == 0) {
btrfs_put_root(root);
@@ -1568,7 +1567,10 @@ struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
return root;
}
- root = btrfs_read_tree_root(fs_info->tree_root, location);
+ key.objectid = objectid;
+ key.type = BTRFS_ROOT_ITEM_KEY;
+ key.offset = (u64)-1;
+ root = btrfs_read_tree_root(fs_info->tree_root, &key);
if (IS_ERR(root))
return root;
@@ -1588,7 +1590,7 @@ struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
}
key.objectid = BTRFS_ORPHAN_OBJECTID;
key.type = BTRFS_ORPHAN_ITEM_KEY;
- key.offset = location->objectid;
+ key.offset = objectid;
ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, path, 0, 0);
btrfs_free_path(path);
@@ -2821,7 +2823,6 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
u64 generation;
u64 features;
u16 csum_type;
- struct btrfs_key location;
struct btrfs_super_block *disk_super;
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
struct btrfs_root *tree_root;
@@ -3235,11 +3236,7 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
}
}
- location.objectid = BTRFS_FS_TREE_OBJECTID;
- location.type = BTRFS_ROOT_ITEM_KEY;
- location.offset = 0;
-
- fs_info->fs_root = btrfs_get_fs_root(fs_info, &location, true);
+ fs_info->fs_root = btrfs_get_fs_root(fs_info, BTRFS_FS_TREE_OBJECTID, true);
if (IS_ERR(fs_info->fs_root)) {
err = PTR_ERR(fs_info->fs_root);
btrfs_warn(fs_info, "failed to read fs tree: %d", err);
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 734bc5270b6a..bf43245406c4 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -66,8 +66,7 @@ int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info,
void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info);
struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
- struct btrfs_key *key,
- bool check_ref);
+ u64 objectid, bool check_ref);
void btrfs_free_fs_info(struct btrfs_fs_info *fs_info);
int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info);
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 2bb25d2dc44b..e7cc98b4d7dc 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -69,11 +69,7 @@ struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
if (objectid < BTRFS_FIRST_FREE_OBJECTID)
return ERR_PTR(-ESTALE);
- key.objectid = root_objectid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
- root = btrfs_get_fs_root(fs_info, &key, true);
+ root = btrfs_get_fs_root(fs_info, root_objectid, true);
if (IS_ERR(root))
return ERR_CAST(root);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 719e68ab552c..283e36994112 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -281,11 +281,7 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
int ret;
/* get the inode */
- key.objectid = defrag->root;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
- inode_root = btrfs_get_fs_root(fs_info, &key, true);
+ inode_root = btrfs_get_fs_root(fs_info, defrag->root, true);
if (IS_ERR(inode_root)) {
ret = PTR_ERR(inode_root);
goto cleanup;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3ea694ee1c90..dc64aee95f9b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5146,7 +5146,7 @@ static int fixup_tree_root_location(struct btrfs_fs_info *fs_info,
btrfs_release_path(path);
- new_root = btrfs_get_fs_root(fs_info, location, true);
+ new_root = btrfs_get_fs_root(fs_info, location->objectid, true);
if (IS_ERR(new_root)) {
err = PTR_ERR(new_root);
goto out;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 40b729dce91c..e8425801f2cb 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -660,7 +660,7 @@ static noinline int create_subvol(struct inode *dir,
goto fail;
key.offset = (u64)-1;
- new_root = btrfs_get_fs_root(fs_info, &key, true);
+ new_root = btrfs_get_fs_root(fs_info, objectid, true);
if (IS_ERR(new_root)) {
ret = PTR_ERR(new_root);
btrfs_abort_transaction(trans, ret);
@@ -2127,10 +2127,7 @@ static noinline int search_ioctl(struct inode *inode,
/* search the root of the inode that was passed */
root = btrfs_grab_root(BTRFS_I(inode)->root);
} else {
- key.objectid = sk->tree_id;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
- root = btrfs_get_fs_root(info, &key, true);
+ root = btrfs_get_fs_root(info, sk->tree_id, true);
if (IS_ERR(root)) {
btrfs_free_path(path);
return PTR_ERR(root);
@@ -2263,10 +2260,7 @@ static noinline int btrfs_search_path_in_tree(struct btrfs_fs_info *info,
ptr = &name[BTRFS_INO_LOOKUP_PATH_MAX - 1];
- key.objectid = tree_id;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
- root = btrfs_get_fs_root(info, &key, true);
+ root = btrfs_get_fs_root(info, tree_id, true);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
root = NULL;
@@ -2359,10 +2353,7 @@ static int btrfs_search_path_in_tree_user(struct inode *inode,
if (dirid != upper_limit.objectid) {
ptr = &args->path[BTRFS_INO_LOOKUP_USER_PATH_MAX - 1];
- key.objectid = treeid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
- root = btrfs_get_fs_root(fs_info, &key, true);
+ root = btrfs_get_fs_root(fs_info, treeid, true);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out;
@@ -2608,9 +2599,7 @@ static int btrfs_ioctl_get_subvol_info(struct file *file, void __user *argp)
/* Get root_item of inode's subvolume */
key.objectid = BTRFS_I(inode)->root->root_key.objectid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
- root = btrfs_get_fs_root(fs_info, &key, true);
+ root = btrfs_get_fs_root(fs_info, key.objectid, true);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out_free;
@@ -3278,7 +3267,6 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp)
struct btrfs_dir_item *di;
struct btrfs_trans_handle *trans;
struct btrfs_path *path = NULL;
- struct btrfs_key location;
struct btrfs_disk_key disk_key;
u64 objectid = 0;
u64 dir_id;
@@ -3299,11 +3287,7 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp)
if (!objectid)
objectid = BTRFS_FS_TREE_OBJECTID;
- location.objectid = objectid;
- location.type = BTRFS_ROOT_ITEM_KEY;
- location.offset = (u64)-1;
-
- new_root = btrfs_get_fs_root(fs_info, &location, true);
+ new_root = btrfs_get_fs_root(fs_info, objectid, true);
if (IS_ERR(new_root)) {
ret = PTR_ERR(new_root);
goto out;
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index f25deca18a5d..72dc096410cd 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -368,13 +368,7 @@ struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, u64 bytenr)
static struct btrfs_root *read_fs_root(struct btrfs_fs_info *fs_info,
u64 root_objectid)
{
- struct btrfs_key key;
-
- key.objectid = root_objectid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
- return btrfs_get_fs_root(fs_info, &key, false);
+ return btrfs_get_fs_root(fs_info, root_objectid, false);
}
/*
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 668f22844017..c89697486366 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -210,7 +210,6 @@ int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info)
struct extent_buffer *leaf;
struct btrfs_path *path;
struct btrfs_key key;
- struct btrfs_key root_key;
struct btrfs_root *root;
int err = 0;
int ret;
@@ -223,10 +222,9 @@ int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info)
key.type = BTRFS_ORPHAN_ITEM_KEY;
key.offset = 0;
- root_key.type = BTRFS_ROOT_ITEM_KEY;
- root_key.offset = (u64)-1;
-
while (1) {
+ u64 root_objectid;
+
ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0);
if (ret < 0) {
err = ret;
@@ -250,10 +248,10 @@ int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info)
key.type != BTRFS_ORPHAN_ITEM_KEY)
break;
- root_key.objectid = key.offset;
+ root_objectid = key.offset;
key.offset++;
- root = btrfs_get_fs_root(fs_info, &root_key, false);
+ root = btrfs_get_fs_root(fs_info, root_objectid, false);
err = PTR_ERR_OR_ZERO(root);
if (err && err != -ENOENT) {
break;
@@ -270,7 +268,7 @@ int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info)
break;
}
err = btrfs_del_orphan_item(trans, tree_root,
- root_key.objectid);
+ root_objectid);
btrfs_end_transaction(trans);
if (err) {
btrfs_handle_fs_error(fs_info, err,
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 0f7740970553..016a025e36c7 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -647,13 +647,9 @@ static int scrub_print_warning_inode(u64 inum, u64 offset, u64 root,
struct btrfs_fs_info *fs_info = swarn->dev->fs_info;
struct inode_fs_paths *ipath = NULL;
struct btrfs_root *local_root;
- struct btrfs_key root_key;
struct btrfs_key key;
- root_key.objectid = root;
- root_key.type = BTRFS_ROOT_ITEM_KEY;
- root_key.offset = (u64)-1;
- local_root = btrfs_get_fs_root(fs_info, &root_key, true);
+ local_root = btrfs_get_fs_root(fs_info, root, true);
if (IS_ERR(local_root)) {
ret = PTR_ERR(local_root);
goto err;
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 4f3b8d2bb56b..3ddd3b9778c7 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -7088,7 +7088,6 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
struct btrfs_root *send_root = BTRFS_I(file_inode(mnt_file))->root;
struct btrfs_fs_info *fs_info = send_root->fs_info;
struct btrfs_root *clone_root;
- struct btrfs_key key;
struct send_ctx *sctx = NULL;
u32 i;
u64 *clone_sources_tmp = NULL;
@@ -7217,11 +7216,8 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
}
for (i = 0; i < arg->clone_sources_count; i++) {
- key.objectid = clone_sources_tmp[i];
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
- clone_root = btrfs_get_fs_root(fs_info, &key, true);
+ clone_root = btrfs_get_fs_root(fs_info,
+ clone_sources_tmp[i], true);
if (IS_ERR(clone_root)) {
ret = PTR_ERR(clone_root);
goto out;
@@ -7252,11 +7248,8 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
}
if (arg->parent_root) {
- key.objectid = arg->parent_root;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
- sctx->parent_root = btrfs_get_fs_root(fs_info, &key, true);
+ sctx->parent_root = btrfs_get_fs_root(fs_info, arg->parent_root,
+ true);
if (IS_ERR(sctx->parent_root)) {
ret = PTR_ERR(sctx->parent_root);
goto out;
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 438ecba26557..6bbf84a26501 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1102,10 +1102,7 @@ char *btrfs_get_subvol_name_from_objectid(struct btrfs_fs_info *fs_info,
dirid = btrfs_root_ref_dirid(path->nodes[0], root_ref);
btrfs_release_path(path);
- key.objectid = subvol_objectid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
- fs_root = btrfs_get_fs_root(fs_info, &key, true);
+ fs_root = btrfs_get_fs_root(fs_info, subvol_objectid, true);
if (IS_ERR(fs_root)) {
ret = PTR_ERR(fs_root);
fs_root = NULL;
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f58d0fdc5078..7a18dd5f7757 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1630,7 +1630,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
}
key.offset = (u64)-1;
- pending->snap = btrfs_get_fs_root(fs_info, &key, true);
+ pending->snap = btrfs_get_fs_root(fs_info, objectid, true);
if (IS_ERR(pending->snap)) {
ret = PTR_ERR(pending->snap);
btrfs_abort_transaction(trans, ret);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 60febf2082ee..d3662e102b2e 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -6112,7 +6112,6 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
struct btrfs_trans_handle *trans;
struct btrfs_key key;
struct btrfs_key found_key;
- struct btrfs_key tmp_key;
struct btrfs_root *log;
struct btrfs_fs_info *fs_info = log_root_tree->fs_info;
struct walk_control wc = {
@@ -6174,11 +6173,8 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
goto error;
}
- tmp_key.objectid = found_key.offset;
- tmp_key.type = BTRFS_ROOT_ITEM_KEY;
- tmp_key.offset = (u64)-1;
-
- wc.replay_dest = btrfs_get_fs_root(fs_info, &tmp_key, true);
+ wc.replay_dest = btrfs_get_fs_root(fs_info, found_key.offset,
+ true);
if (IS_ERR(wc.replay_dest)) {
ret = PTR_ERR(wc.replay_dest);
diff --git a/fs/btrfs/uuid-tree.c b/fs/btrfs/uuid-tree.c
index 76671a6bcb61..28525ad7ff8c 100644
--- a/fs/btrfs/uuid-tree.c
+++ b/fs/btrfs/uuid-tree.c
@@ -257,7 +257,6 @@ static int btrfs_uuid_iter_rem(struct btrfs_root *uuid_root, u8 *uuid, u8 type,
static int btrfs_check_uuid_tree_entry(struct btrfs_fs_info *fs_info,
u8 *uuid, u8 type, u64 subvolid)
{
- struct btrfs_key key;
int ret = 0;
struct btrfs_root *subvol_root;
@@ -265,10 +264,7 @@ static int btrfs_check_uuid_tree_entry(struct btrfs_fs_info *fs_info,
type != BTRFS_UUID_KEY_RECEIVED_SUBVOL)
goto out;
- key.objectid = subvolid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
- subvol_root = btrfs_get_fs_root(fs_info, &key, true);
+ subvol_root = btrfs_get_fs_root(fs_info, subvolid, true);
if (IS_ERR(subvol_root)) {
ret = PTR_ERR(subvol_root);
if (ret == -ENOENT)
--
2.25.0
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/3] btrfs: open code read_fs_root
2020-05-15 17:35 [PATCH 0/3] Tree and inode lookup cleanups David Sterba
2020-05-15 17:35 ` [PATCH 1/3] btrfs: simplify root lookup by id David Sterba
@ 2020-05-15 17:35 ` David Sterba
2020-05-15 17:35 ` [PATCH 3/3] btrfs: simplify iget helpers David Sterba
2 siblings, 0 replies; 4+ messages in thread
From: David Sterba @ 2020-05-15 17:35 UTC (permalink / raw)
To: linux-btrfs; +Cc: David Sterba
After the update to btrfs_get_fs_root, read_fs_root has become trivial
wrapper that can be open coded.
Signed-off-by: David Sterba <dsterba@suse.com>
---
fs/btrfs/relocation.c | 27 ++++++++++++---------------
1 file changed, 12 insertions(+), 15 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 72dc096410cd..722f36343664 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -365,12 +365,6 @@ struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, u64 bytenr)
return btrfs_grab_root(root);
}
-static struct btrfs_root *read_fs_root(struct btrfs_fs_info *fs_info,
- u64 root_objectid)
-{
- return btrfs_get_fs_root(fs_info, root_objectid, false);
-}
-
/*
* For useless nodes, do two major clean ups:
*
@@ -1850,7 +1844,8 @@ int prepare_to_merge(struct reloc_control *rc, int err)
struct btrfs_root, root_list);
list_del_init(&reloc_root->root_list);
- root = read_fs_root(fs_info, reloc_root->root_key.offset);
+ root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,
+ false);
BUG_ON(IS_ERR(root));
BUG_ON(root->reloc_root != reloc_root);
@@ -1912,8 +1907,8 @@ void merge_reloc_roots(struct reloc_control *rc)
struct btrfs_root, root_list);
if (btrfs_root_refs(&reloc_root->root_item) > 0) {
- root = read_fs_root(fs_info,
- reloc_root->root_key.offset);
+ root = btrfs_get_fs_root(fs_info,
+ reloc_root->root_key.offset, false);
BUG_ON(IS_ERR(root));
BUG_ON(root->reloc_root != reloc_root);
@@ -1987,7 +1982,7 @@ static int record_reloc_root_in_trans(struct btrfs_trans_handle *trans,
if (reloc_root->last_trans == trans->transid)
return 0;
- root = read_fs_root(fs_info, reloc_root->root_key.offset);
+ root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset, false);
BUG_ON(IS_ERR(root));
BUG_ON(root->reloc_root != reloc_root);
ret = btrfs_record_root_in_trans(trans, root);
@@ -3467,7 +3462,7 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
u64 objectid;
int err = 0;
- root = read_fs_root(fs_info, BTRFS_DATA_RELOC_TREE_OBJECTID);
+ root = btrfs_get_fs_root(fs_info, BTRFS_DATA_RELOC_TREE_OBJECTID, false);
if (IS_ERR(root))
return ERR_CAST(root);
@@ -3763,8 +3758,8 @@ int btrfs_recover_relocation(struct btrfs_root *root)
list_add(&reloc_root->root_list, &reloc_roots);
if (btrfs_root_refs(&reloc_root->root_item) > 0) {
- fs_root = read_fs_root(fs_info,
- reloc_root->root_key.offset);
+ fs_root = btrfs_get_fs_root(fs_info,
+ reloc_root->root_key.offset, false);
if (IS_ERR(fs_root)) {
ret = PTR_ERR(fs_root);
if (ret != -ENOENT) {
@@ -3820,7 +3815,8 @@ int btrfs_recover_relocation(struct btrfs_root *root)
continue;
}
- fs_root = read_fs_root(fs_info, reloc_root->root_key.offset);
+ fs_root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,
+ false);
if (IS_ERR(fs_root)) {
err = PTR_ERR(fs_root);
list_add_tail(&reloc_root->root_list, &reloc_roots);
@@ -3862,7 +3858,8 @@ int btrfs_recover_relocation(struct btrfs_root *root)
if (err == 0) {
/* cleanup orphan inode in data relocation tree */
- fs_root = read_fs_root(fs_info, BTRFS_DATA_RELOC_TREE_OBJECTID);
+ fs_root = btrfs_get_fs_root(fs_info,
+ BTRFS_DATA_RELOC_TREE_OBJECTID, false);
if (IS_ERR(fs_root)) {
err = PTR_ERR(fs_root);
} else {
--
2.25.0
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 3/3] btrfs: simplify iget helpers
2020-05-15 17:35 [PATCH 0/3] Tree and inode lookup cleanups David Sterba
2020-05-15 17:35 ` [PATCH 1/3] btrfs: simplify root lookup by id David Sterba
2020-05-15 17:35 ` [PATCH 2/3] btrfs: open code read_fs_root David Sterba
@ 2020-05-15 17:35 ` David Sterba
2 siblings, 0 replies; 4+ messages in thread
From: David Sterba @ 2020-05-15 17:35 UTC (permalink / raw)
To: linux-btrfs; +Cc: David Sterba
The inode lookup starting at btrfs_iget takes the full location key,
while only the objectid is used to match the inode, because the lookup
happens inside the given root thus the inode number is unique.
The entire location key is properly set up in btrfs_init_locked_inode.
Simplify the helpers and pass only inode number, renaming it to 'ino'
instead of 'objectid'. This allows to remove temporary variables key,
saving some stack space.
Signed-off-by: David Sterba <dsterba@suse.com>
---
fs/btrfs/ctree.h | 5 ++---
fs/btrfs/export.c | 11 ++--------
fs/btrfs/file.c | 6 +-----
fs/btrfs/free-space-cache.c | 2 +-
fs/btrfs/inode.c | 40 +++++++++++++++++++------------------
fs/btrfs/ioctl.c | 2 +-
fs/btrfs/props.c | 9 ++-------
fs/btrfs/relocation.c | 13 ++----------
fs/btrfs/send.c | 7 +------
fs/btrfs/super.c | 6 +-----
fs/btrfs/tree-log.c | 24 ++++++++++------------
11 files changed, 44 insertions(+), 81 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 0a1fa1526c43..c7fe03ed84ef 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2876,10 +2876,9 @@ void btrfs_free_inode(struct inode *inode);
int btrfs_drop_inode(struct inode *inode);
int __init btrfs_init_cachep(void);
void __cold btrfs_destroy_cachep(void);
-struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location,
+struct inode *btrfs_iget_path(struct super_block *s, u64 ino,
struct btrfs_root *root, struct btrfs_path *path);
-struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
- struct btrfs_root *root);
+struct inode *btrfs_iget(struct super_block *s, u64 ino, struct btrfs_root *root);
struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
struct page *page, size_t pg_offset,
u64 start, u64 end);
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index e7cc98b4d7dc..1a8d419d9e1f 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -64,7 +64,6 @@ struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
struct btrfs_root *root;
struct inode *inode;
- struct btrfs_key key;
if (objectid < BTRFS_FIRST_FREE_OBJECTID)
return ERR_PTR(-ESTALE);
@@ -73,11 +72,7 @@ struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
if (IS_ERR(root))
return ERR_CAST(root);
- key.objectid = objectid;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
-
- inode = btrfs_iget(sb, &key, root);
+ inode = btrfs_iget(sb, objectid, root);
btrfs_put_root(root);
if (IS_ERR(inode))
return ERR_CAST(inode);
@@ -196,9 +191,7 @@ struct dentry *btrfs_get_parent(struct dentry *child)
found_key.offset, 0, 0);
}
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
- return d_obtain_alias(btrfs_iget(fs_info->sb, &key, root));
+ return d_obtain_alias(btrfs_iget(fs_info->sb, key.objectid, root));
fail:
btrfs_free_path(path);
return ERR_PTR(ret);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 283e36994112..ba217d89cbe8 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -275,7 +275,6 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
{
struct btrfs_root *inode_root;
struct inode *inode;
- struct btrfs_key key;
struct btrfs_ioctl_defrag_range_args range;
int num_defrag;
int ret;
@@ -287,10 +286,7 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
goto cleanup;
}
- key.objectid = defrag->ino;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
- inode = btrfs_iget(fs_info->sb, &key, inode_root);
+ inode = btrfs_iget(fs_info->sb, defrag->ino, inode_root);
btrfs_put_root(inode_root);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 3c353a337b91..525bc5a250da 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -82,7 +82,7 @@ static struct inode *__lookup_free_space_inode(struct btrfs_root *root,
* sure NOFS is set to keep us from deadlocking.
*/
nofs_flag = memalloc_nofs_save();
- inode = btrfs_iget_path(fs_info->sb, &location, root, path);
+ inode = btrfs_iget_path(fs_info->sb, location.objectid, root, path);
btrfs_release_path(path);
memalloc_nofs_restore(nofs_flag);
if (IS_ERR(inode))
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index dc64aee95f9b..de231f7a75a6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -51,7 +51,7 @@
#include "block-group.h"
struct btrfs_iget_args {
- struct btrfs_key *location;
+ u64 ino;
struct btrfs_root *root;
};
@@ -2978,7 +2978,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root)
found_key.objectid = found_key.offset;
found_key.type = BTRFS_INODE_ITEM_KEY;
found_key.offset = 0;
- inode = btrfs_iget(fs_info->sb, &found_key, root);
+ inode = btrfs_iget(fs_info->sb, last_objectid, root);
ret = PTR_ERR_OR_ZERO(inode);
if (ret && ret != -ENOENT)
goto out;
@@ -5224,9 +5224,11 @@ static void inode_tree_del(struct inode *inode)
static int btrfs_init_locked_inode(struct inode *inode, void *p)
{
struct btrfs_iget_args *args = p;
- inode->i_ino = args->location->objectid;
- memcpy(&BTRFS_I(inode)->location, args->location,
- sizeof(*args->location));
+
+ inode->i_ino = args->ino;
+ BTRFS_I(inode)->location.objectid = args->ino;
+ BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
+ BTRFS_I(inode)->location.offset = 0;
BTRFS_I(inode)->root = btrfs_grab_root(args->root);
BUG_ON(args->root && !BTRFS_I(inode)->root);
return 0;
@@ -5235,19 +5237,19 @@ static int btrfs_init_locked_inode(struct inode *inode, void *p)
static int btrfs_find_actor(struct inode *inode, void *opaque)
{
struct btrfs_iget_args *args = opaque;
- return args->location->objectid == BTRFS_I(inode)->location.objectid &&
+
+ return args->ino == BTRFS_I(inode)->location.objectid &&
args->root == BTRFS_I(inode)->root;
}
-static struct inode *btrfs_iget_locked(struct super_block *s,
- struct btrfs_key *location,
+static struct inode *btrfs_iget_locked(struct super_block *s, u64 ino,
struct btrfs_root *root)
{
struct inode *inode;
struct btrfs_iget_args args;
- unsigned long hashval = btrfs_inode_hash(location->objectid, root);
+ unsigned long hashval = btrfs_inode_hash(ino, root);
- args.location = location;
+ args.ino = ino;
args.root = root;
inode = iget5_locked(s, hashval, btrfs_find_actor,
@@ -5257,17 +5259,17 @@ static struct inode *btrfs_iget_locked(struct super_block *s,
}
/*
- * Get an inode object given its location and corresponding root.
+ * Get an inode object given its inode number and corresponding root.
* Path can be preallocated to prevent recursing back to iget through
* allocator. NULL is also valid but may require an additional allocation
* later.
*/
-struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location,
+struct inode *btrfs_iget_path(struct super_block *s, u64 ino,
struct btrfs_root *root, struct btrfs_path *path)
{
struct inode *inode;
- inode = btrfs_iget_locked(s, location, root);
+ inode = btrfs_iget_locked(s, ino, root);
if (!inode)
return ERR_PTR(-ENOMEM);
@@ -5294,10 +5296,9 @@ struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location,
return inode;
}
-struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
- struct btrfs_root *root)
+struct inode *btrfs_iget(struct super_block *s, u64 ino, struct btrfs_root *root)
{
- return btrfs_iget_path(s, location, root, NULL);
+ return btrfs_iget_path(s, ino, root, NULL);
}
static struct inode *new_simple_dir(struct super_block *s,
@@ -5366,7 +5367,7 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
return ERR_PTR(ret);
if (location.type == BTRFS_INODE_ITEM_KEY) {
- inode = btrfs_iget(dir->i_sb, &location, root);
+ inode = btrfs_iget(dir->i_sb, location.objectid, root);
if (IS_ERR(inode))
return inode;
@@ -5390,7 +5391,7 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
else
inode = new_simple_dir(dir->i_sb, &location, sub_root);
} else {
- inode = btrfs_iget(dir->i_sb, &location, sub_root);
+ inode = btrfs_iget(dir->i_sb, location.objectid, sub_root);
}
if (root != sub_root)
btrfs_put_root(sub_root);
@@ -5771,7 +5772,8 @@ int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index)
static int btrfs_insert_inode_locked(struct inode *inode)
{
struct btrfs_iget_args args;
- args.location = &BTRFS_I(inode)->location;
+
+ args.ino = BTRFS_I(inode)->location.objectid;
args.root = BTRFS_I(inode)->root;
return insert_inode_locked4(inode,
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index e8425801f2cb..cba7f414933d 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2412,7 +2412,7 @@ static int btrfs_search_path_in_tree_user(struct inode *inode,
goto out_put;
}
- temp_inode = btrfs_iget(sb, &key2, root);
+ temp_inode = btrfs_iget(sb, key2.objectid, root);
if (IS_ERR(temp_inode)) {
ret = PTR_ERR(temp_inode);
goto out_put;
diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index ff1ff90e48b1..2dcb1cb21634 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -408,19 +408,14 @@ int btrfs_subvol_inherit_props(struct btrfs_trans_handle *trans,
struct btrfs_root *parent_root)
{
struct super_block *sb = root->fs_info->sb;
- struct btrfs_key key;
struct inode *parent_inode, *child_inode;
int ret;
- key.objectid = BTRFS_FIRST_FREE_OBJECTID;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
-
- parent_inode = btrfs_iget(sb, &key, parent_root);
+ parent_inode = btrfs_iget(sb, BTRFS_FIRST_FREE_OBJECTID, parent_root);
if (IS_ERR(parent_inode))
return PTR_ERR(parent_inode);
- child_inode = btrfs_iget(sb, &key, root);
+ child_inode = btrfs_iget(sb, BTRFS_FIRST_FREE_OBJECTID, root);
if (IS_ERR(child_inode)) {
iput(parent_inode);
return PTR_ERR(child_inode);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 722f36343664..87b9d38ab29f 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2958,7 +2958,6 @@ static int delete_block_group_cache(struct btrfs_fs_info *fs_info,
struct inode *inode,
u64 ino)
{
- struct btrfs_key key;
struct btrfs_root *root = fs_info->tree_root;
struct btrfs_trans_handle *trans;
int ret = 0;
@@ -2966,11 +2965,7 @@ static int delete_block_group_cache(struct btrfs_fs_info *fs_info,
if (inode)
goto truncate;
- key.objectid = ino;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
-
- inode = btrfs_iget(fs_info->sb, &key, root);
+ inode = btrfs_iget(fs_info->sb, ino, root);
if (IS_ERR(inode))
return -ENOENT;
@@ -3458,7 +3453,6 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
struct inode *inode = NULL;
struct btrfs_trans_handle *trans;
struct btrfs_root *root;
- struct btrfs_key key;
u64 objectid;
int err = 0;
@@ -3479,10 +3473,7 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
err = __insert_orphan_inode(trans, root, objectid);
BUG_ON(err);
- key.objectid = objectid;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
- inode = btrfs_iget(fs_info->sb, &key, root);
+ inode = btrfs_iget(fs_info->sb, objectid, root);
BUG_ON(IS_ERR(inode));
BTRFS_I(inode)->index_cnt = group->start;
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 3ddd3b9778c7..0f37660b14b2 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4806,17 +4806,12 @@ static ssize_t fill_read_buf(struct send_ctx *sctx, u64 offset, u32 len)
struct inode *inode;
struct page *page;
char *addr;
- struct btrfs_key key;
pgoff_t index = offset >> PAGE_SHIFT;
pgoff_t last_index;
unsigned pg_offset = offset_in_page(offset);
ssize_t ret = 0;
- key.objectid = sctx->cur_ino;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
-
- inode = btrfs_iget(fs_info->sb, &key, root);
+ inode = btrfs_iget(fs_info->sb, sctx->cur_ino, root);
if (IS_ERR(inode))
return PTR_ERR(inode);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 6bbf84a26501..bc73fd670702 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1217,7 +1217,6 @@ static int btrfs_fill_super(struct super_block *sb,
{
struct inode *inode;
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
- struct btrfs_key key;
int err;
sb->s_maxbytes = MAX_LFS_FILESIZE;
@@ -1245,10 +1244,7 @@ static int btrfs_fill_super(struct super_block *sb,
return err;
}
- key.objectid = BTRFS_FIRST_FREE_OBJECTID;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
- inode = btrfs_iget(sb, &key, fs_info->fs_root);
+ inode = btrfs_iget(sb, BTRFS_FIRST_FREE_OBJECTID, fs_info->fs_root);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
goto fail_close;
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index d3662e102b2e..67fa7087f707 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -550,13 +550,9 @@ static noinline int overwrite_item(struct btrfs_trans_handle *trans,
static noinline struct inode *read_one_inode(struct btrfs_root *root,
u64 objectid)
{
- struct btrfs_key key;
struct inode *inode;
- key.objectid = objectid;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
- inode = btrfs_iget(root->fs_info->sb, &key, root);
+ inode = btrfs_iget(root->fs_info->sb, objectid, root);
if (IS_ERR(inode))
inode = NULL;
return inode;
@@ -4815,10 +4811,7 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
btrfs_release_path(path);
- key.objectid = ino;
- key.type = BTRFS_INODE_ITEM_KEY;
- key.offset = 0;
- inode = btrfs_iget(fs_info->sb, &key, root);
+ inode = btrfs_iget(fs_info->sb, ino, root);
/*
* If the other inode that had a conflicting dir entry was
* deleted in the current transaction, we need to log its parent
@@ -4827,8 +4820,7 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
if (ret == -ENOENT) {
- key.objectid = parent;
- inode = btrfs_iget(fs_info->sb, &key, root);
+ inode = btrfs_iget(fs_info->sb, parent, root);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
} else {
@@ -5567,7 +5559,7 @@ static int log_new_dir_dentries(struct btrfs_trans_handle *trans,
continue;
btrfs_release_path(path);
- di_inode = btrfs_iget(fs_info->sb, &di_key, root);
+ di_inode = btrfs_iget(fs_info->sb, di_key.objectid, root);
if (IS_ERR(di_inode)) {
ret = PTR_ERR(di_inode);
goto next_dir_inode;
@@ -5693,7 +5685,8 @@ 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);
+ dir_inode = btrfs_iget(fs_info->sb, inode_key.objectid,
+ root);
/*
* If the parent inode was deleted, return an error to
* fallback to a transaction commit. This is to prevent
@@ -5760,14 +5753,17 @@ static int log_new_ancestors(struct btrfs_trans_handle *trans,
int slot = path->slots[0];
struct btrfs_key search_key;
struct inode *inode;
+ u64 ino;
int ret = 0;
btrfs_release_path(path);
+ ino = found_key.offset;
+
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);
+ inode = btrfs_iget(fs_info->sb, ino, root);
if (IS_ERR(inode))
return PTR_ERR(inode);
--
2.25.0
^ permalink raw reply related [flat|nested] 4+ messages in thread