mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-13 08:20:40 -04:00
Code Issues Packages Projects Releases Wiki Activity

btrfs: remove no longer used delayed ref head search functionality

Browse Source 
After the previous patch, which converted the rb-tree used to track
delayed ref heads into an xarray, the find_ref_head() function is now
used only by one caller which always passes false to the 'return_bigger'
argument. So remove the 'return_bigger' logic, simplifying the function,
and move all the function code to the single caller.

Reviewed-by: Boris Burkov <boris@bur.io>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2024-10-24 12:07:51 +01:00
committed by David Sterba
parent 928ed1349d
commit 7f13360ef9
1 changed files with 5 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
fs/btrfs/delayed-ref.c
View File

@@ -355,34 +355,6 @@ static struct btrfs_delayed_ref_head *find_first_ref_head(
return xa_find(&dr->head_refs, &from, ULONG_MAX, XA_PRESENT);
}
/*
* Find a head entry based on bytenr. This returns the delayed ref head if it
* was able to find one, or NULL if nothing was in that spot. If return_bigger
* is given, the next bigger entry is returned if no exact match is found.
*/
static struct btrfs_delayed_ref_head *find_ref_head(
const struct btrfs_fs_info *fs_info,
struct btrfs_delayed_ref_root *dr, u64 bytenr,
bool return_bigger)
{
const unsigned long target_index = (bytenr >> fs_info->sectorsize_bits);
unsigned long found_index = target_index;
struct btrfs_delayed_ref_head *entry;
lockdep_assert_held(&dr->lock);
entry = xa_find(&dr->head_refs, &found_index, ULONG_MAX, XA_PRESENT);
if (!entry)
return NULL;
ASSERT(found_index >= target_index);
if (found_index != target_index && !return_bigger)
return NULL;
return entry;
}
static bool btrfs_delayed_ref_lock(struct btrfs_delayed_ref_root *delayed_refs,
struct btrfs_delayed_ref_head *head)
{
@@ -1184,7 +1156,11 @@ btrfs_find_delayed_ref_head(const struct btrfs_fs_info *fs_info,
struct btrfs_delayed_ref_root *delayed_refs,
u64 bytenr)
{
return find_ref_head(fs_info, delayed_refs, bytenr, false);
const unsigned long index = (bytenr >> fs_info->sectorsize_bits);
lockdep_assert_held(&delayed_refs->lock);
return xa_load(&delayed_refs->head_refs, index);
}
static int find_comp(struct btrfs_delayed_ref_node *entry, u64 root, u64 parent)