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btrfs: remove check for NULL block reserve at btrfs_block_rsv_check()

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The block reserve passed to btrfs_block_rsv_check() is never NULL, so
remove the check. In case it can ever become NULL in the future, then
we'll get a pretty obvious and clear NULL pointer dereference crash and
stack trace.

Reviewed-by: Josef Bacik <josef@toxicpanda.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 2023-03-21 11:13:39 +00:00 committed by David Sterba
parent 5c1f2c6bca
commit b93fa4acbb
1 changed files with 0 additions and 3 deletions
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3
fs/btrfs/block-rsv.c
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@ -232,9 +232,6 @@ int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_percent)
u64 num_bytes = 0;
int ret = -ENOSPC;
if (!block_rsv)
return 0;
spin_lock(&block_rsv->lock);
num_bytes = mult_perc(block_rsv->size, min_percent);
if (block_rsv->reserved >= num_bytes)