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btrfs: send: fix comment for SEND_MAX_DIR_UTIMES_CACHE_SIZE

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The comment is wrong, because it's not about storing the ID of new
directories that were already created, instead it's about storing utimes
values for directories (both new and existing). The comment is wrong
because it was copy pasted from SEND_MAX_DIR_CREATED_CACHE_SIZE, but
forgot to update it afterwards.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Daniel Vacek <neelx@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2026-06-15 17:05:22 +01:00 committed by David Sterba
parent e549093c11
commit a4cea1272c
1 changed files with 4 additions and 4 deletions
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8
fs/btrfs/send.c
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@ -130,10 +130,10 @@ static_assert(offsetof(struct backref_cache_entry, entry) == 0);
#define SEND_MAX_DIR_CREATED_CACHE_SIZE 64
/*
* Max number of entries in the cache that stores directories that were already
* created. The cache uses raw struct btrfs_lru_cache_entry entries, so it uses
* at most 4096 bytes - sizeof(struct btrfs_lru_cache_entry) is 48 bytes, but
* the kmalloc-64 slab is used, so we get 4096 bytes (64 bytes * 64).
* Maximum number of entries in the cache that stores utimes values for directories.
* The cache uses raw struct btrfs_lru_cache_entry entries, so it uses at most
* 4096 bytes - sizeof(struct btrfs_lru_cache_entry) is 48 bytes, but the
* kmalloc-64 slab is used, so we get 4096 bytes (64 bytes * 64).
*/
#define SEND_MAX_DIR_UTIMES_CACHE_SIZE 64