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btrfs: move btrfs_unlock_up_safe to other locking functions

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The function belongs to the family of locking functions, so move it
there. The 'noinline' keyword is dropped as it's now an exported
function that does not need it.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-09-24 19:17:17 +02:00
parent ed2b1d36a9
commit 1f95ec012c
5 changed files with 28 additions and 28 deletions
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26
fs/btrfs/ctree.c
View File

@ -2353,32 +2353,6 @@ static noinline void unlock_up(struct btrfs_path *path, int level,
}
}
/*
* This releases any locks held in the path starting at level and
* going all the way up to the root.
*
* btrfs_search_slot will keep the lock held on higher nodes in a few
* corner cases, such as COW of the block at slot zero in the node. This
* ignores those rules, and it should only be called when there are no
* more updates to be done higher up in the tree.
*/
noinline void btrfs_unlock_up_safe(struct btrfs_path *path, int level)
{
int i;
if (path->keep_locks)
return;
for (i = level; i < BTRFS_MAX_LEVEL; i++) {
if (!path->nodes[i])
continue;
if (!path->locks[i])
continue;
btrfs_tree_unlock_rw(path->nodes[i], path->locks[i]);
path->locks[i] = 0;
}
}
/*
* helper function for btrfs_search_slot. The goal is to find a block
* in cache without setting the path to blocking. If we find the block

2
fs/btrfs/ctree.h
View File

@ -2568,8 +2568,6 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
void btrfs_release_path(struct btrfs_path *p);
struct btrfs_path *btrfs_alloc_path(void);
void btrfs_free_path(struct btrfs_path *p);
void btrfs_set_path_blocking(struct btrfs_path *p);
void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int slot, int nr);

1
fs/btrfs/delayed-inode.c
View File

@ -12,6 +12,7 @@
#include "transaction.h"
#include "ctree.h"
#include "qgroup.h"
#include "locking.h"
#define BTRFS_DELAYED_WRITEBACK 512
#define BTRFS_DELAYED_BACKGROUND 128

26
fs/btrfs/locking.c
View File

@ -342,3 +342,29 @@ void btrfs_set_path_blocking(struct btrfs_path *p)
}
}
}
/*
* This releases any locks held in the path starting at level and going all the
* way up to the root.
*
* btrfs_search_slot will keep the lock held on higher nodes in a few corner
* cases, such as COW of the block at slot zero in the node. This ignores
* those rules, and it should only be called when there are no more updates to
* be done higher up in the tree.
*/
void btrfs_unlock_up_safe(struct btrfs_path *path, int level)
{
int i;
if (path->keep_locks)
return;
for (i = level; i < BTRFS_MAX_LEVEL; i++) {
if (!path->nodes[i])
continue;
if (!path->locks[i])
continue;
btrfs_tree_unlock_rw(path->nodes[i], path->locks[i]);
path->locks[i] = 0;
}
}

1
fs/btrfs/locking.h
View File

@ -34,6 +34,7 @@ static inline void btrfs_assert_tree_locked(struct extent_buffer *eb) { }
#endif
void btrfs_set_path_blocking(struct btrfs_path *p);
void btrfs_unlock_up_safe(struct btrfs_path *path, int level);
static inline void btrfs_tree_unlock_rw(struct extent_buffer *eb, int rw)
{