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btrfs: reduce size of struct btrfs_free_space_ctl

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We have a 4 bytes hole in the structure, reorder some fields so that we
eliminate the hole and reduce the structure size from 144 bytes down to
136 bytes. This way on a 4K page system, we can fit 30 structures per
page instead of 28.

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 2026-04-15 15:06:13 +01:00 committed by David Sterba
parent acef2bf43a
commit 08d9e2162c
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/free-space-cache.h
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@ -74,13 +74,13 @@ enum {
};
struct btrfs_free_space_ctl {
spinlock_t tree_lock;
struct rb_root free_space_offset;
struct rb_root_cached free_space_bytes;
u64 free_space;
spinlock_t tree_lock;
int extents_thresh;
int free_extents;
int total_bitmaps;
u64 free_space;
s32 discardable_extents[BTRFS_STAT_NR_ENTRIES];
s64 discardable_bytes[BTRFS_STAT_NR_ENTRIES];
const struct btrfs_free_space_op *op;