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btrfs: remove trivial locking wrappers of tree mod log

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[ Upstream commit b1a09f1ec540408abf3a50d15dff5d9506932693 ]

The wrappers are trivial and do not bring any extra value on top of the
plain locking primitives.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
David Sterba 2018-03-05 15:43:41 +01:00 committed by prashantpaddune
parent 19ef703ec4
commit 1aa4c9cdd4
1 changed files with 19 additions and 39 deletions
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58
fs/btrfs/ctree.c
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@ -332,26 +332,6 @@ struct tree_mod_elem {
struct tree_mod_root old_root;
};
static inline void tree_mod_log_read_lock(struct btrfs_fs_info *fs_info)
{
read_lock(&fs_info->tree_mod_log_lock);
}
static inline void tree_mod_log_read_unlock(struct btrfs_fs_info *fs_info)
{
read_unlock(&fs_info->tree_mod_log_lock);
}
static inline void tree_mod_log_write_lock(struct btrfs_fs_info *fs_info)
{
write_lock(&fs_info->tree_mod_log_lock);
}
static inline void tree_mod_log_write_unlock(struct btrfs_fs_info *fs_info)
{
write_unlock(&fs_info->tree_mod_log_lock);
}
/*
* Pull a new tree mod seq number for our operation.
*/
@ -371,14 +351,14 @@ static inline u64 btrfs_inc_tree_mod_seq(struct btrfs_fs_info *fs_info)
u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info,
struct seq_list *elem)
{
tree_mod_log_write_lock(fs_info);
write_lock(&fs_info->tree_mod_log_lock);
spin_lock(&fs_info->tree_mod_seq_lock);
if (!elem->seq) {
elem->seq = btrfs_inc_tree_mod_seq(fs_info);
list_add_tail(&elem->list, &fs_info->tree_mod_seq_list);
}
spin_unlock(&fs_info->tree_mod_seq_lock);
tree_mod_log_write_unlock(fs_info);
write_unlock(&fs_info->tree_mod_log_lock);
return elem->seq;
}
@ -420,7 +400,7 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
* anything that's lower than the lowest existing (read: blocked)
* sequence number can be removed from the tree.
*/
tree_mod_log_write_lock(fs_info);
write_lock(&fs_info->tree_mod_log_lock);
tm_root = &fs_info->tree_mod_log;
for (node = rb_first(tm_root); node; node = next) {
next = rb_next(node);
@ -430,7 +410,7 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
rb_erase(node, tm_root);
kfree(tm);
}
tree_mod_log_write_unlock(fs_info);
write_unlock(&fs_info->tree_mod_log_lock);
}
/*
@ -441,7 +421,7 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
* operations, or the shifted logical of the affected block for all other
* operations.
*
* Note: must be called with write lock (tree_mod_log_write_lock).
* Note: must be called with write lock for fs_info::tree_mod_log_lock.
*/
static noinline int
__tree_mod_log_insert(struct btrfs_fs_info *fs_info, struct tree_mod_elem *tm)
@ -481,7 +461,7 @@ __tree_mod_log_insert(struct btrfs_fs_info *fs_info, struct tree_mod_elem *tm)
* Determines if logging can be omitted. Returns 1 if it can. Otherwise, it
* returns zero with the tree_mod_log_lock acquired. The caller must hold
* this until all tree mod log insertions are recorded in the rb tree and then
* call tree_mod_log_write_unlock() to release.
* write unlock fs_info::tree_mod_log_lock.
*/
static inline int tree_mod_dont_log(struct btrfs_fs_info *fs_info,
struct extent_buffer *eb) {
@ -491,9 +471,9 @@ static inline int tree_mod_dont_log(struct btrfs_fs_info *fs_info,
if (eb && btrfs_header_level(eb) == 0)
return 1;
tree_mod_log_write_lock(fs_info);
write_lock(&fs_info->tree_mod_log_lock);
if (list_empty(&(fs_info)->tree_mod_seq_list)) {
tree_mod_log_write_unlock(fs_info);
write_unlock(&fs_info->tree_mod_log_lock);
return 1;
}
@ -557,7 +537,7 @@ tree_mod_log_insert_key(struct btrfs_fs_info *fs_info,
}
ret = __tree_mod_log_insert(fs_info, tm);
tree_mod_log_write_unlock(fs_info);
write_unlock(&eb->fs_info->tree_mod_log_lock);
if (ret)
kfree(tm);
@ -621,7 +601,7 @@ tree_mod_log_insert_move(struct btrfs_fs_info *fs_info,
ret = __tree_mod_log_insert(fs_info, tm);
if (ret)
goto free_tms;
tree_mod_log_write_unlock(fs_info);
write_unlock(&eb->fs_info->tree_mod_log_lock);
kfree(tm_list);
return 0;
@ -632,7 +612,7 @@ free_tms:
kfree(tm_list[i]);
}
if (locked)
tree_mod_log_write_unlock(fs_info);
write_unlock(&eb->fs_info->tree_mod_log_lock);
kfree(tm_list);
kfree(tm);
@ -713,7 +693,7 @@ tree_mod_log_insert_root(struct btrfs_fs_info *fs_info,
if (!ret)
ret = __tree_mod_log_insert(fs_info, tm);
tree_mod_log_write_unlock(fs_info);
write_unlock(&fs_info->tree_mod_log_lock);
if (ret)
goto free_tms;
kfree(tm_list);
@ -741,7 +721,7 @@ __tree_mod_log_search(struct btrfs_fs_info *fs_info, u64 start, u64 min_seq,
struct tree_mod_elem *found = NULL;
u64 index = start >> PAGE_CACHE_SHIFT;
tree_mod_log_read_lock(fs_info);
read_lock(&fs_info->tree_mod_log_lock);
tm_root = &fs_info->tree_mod_log;
node = tm_root->rb_node;
while (node) {
@ -769,7 +749,7 @@ __tree_mod_log_search(struct btrfs_fs_info *fs_info, u64 start, u64 min_seq,
break;
}
}
tree_mod_log_read_unlock(fs_info);
read_unlock(&fs_info->tree_mod_log_lock);
return found;
}
@ -850,7 +830,7 @@ tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst,
goto free_tms;
}
tree_mod_log_write_unlock(fs_info);
write_unlock(&fs_info->tree_mod_log_lock);
kfree(tm_list);
return 0;
@ -862,7 +842,7 @@ free_tms:
kfree(tm_list[i]);
}
if (locked)
tree_mod_log_write_unlock(fs_info);
write_unlock(&fs_info->tree_mod_log_lock);
kfree(tm_list);
return ret;
@ -922,7 +902,7 @@ tree_mod_log_free_eb(struct btrfs_fs_info *fs_info, struct extent_buffer *eb)
goto free_tms;
ret = __tree_mod_log_free_eb(fs_info, tm_list, nritems);
tree_mod_log_write_unlock(fs_info);
write_unlock(&eb->fs_info->tree_mod_log_lock);
if (ret)
goto free_tms;
kfree(tm_list);
@ -1284,7 +1264,7 @@ __tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb,
unsigned long p_size = sizeof(struct btrfs_key_ptr);
n = btrfs_header_nritems(eb);
tree_mod_log_read_lock(fs_info);
read_lock(&fs_info->tree_mod_log_lock);
while (tm && tm->seq >= time_seq) {
/*
* all the operations are recorded with the operator used for
@ -1339,7 +1319,7 @@ __tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb,
if (tm->index != first_tm->index)
break;
}
tree_mod_log_read_unlock(fs_info);
read_unlock(&fs_info->tree_mod_log_lock);
btrfs_set_header_nritems(eb, n);
}