unimore/kernel-hacking-2024-linux-steffo
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btrfs: print the block rsv type when we fail our reservation

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To help with debugging, print the type of the block rsv when we fail to
use our target block rsv in btrfs_use_block_rsv.

This now produces:

 [  544.672035] BTRFS: block rsv 1 returned -28

which is still cryptic without consulting the enum in block-rsv.h but I
guess it's better than nothing.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add note from Nikolay ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-10-26 16:57:26 -04:00 committed by David Sterba
parent a1fbc6750e
commit e38fdb7167
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/block-rsv.c
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@ -511,7 +511,8 @@ struct btrfs_block_rsv *btrfs_use_block_rsv(struct btrfs_trans_handle *trans,
/*DEFAULT_RATELIMIT_BURST*/ 1);
if (__ratelimit(&_rs))
WARN(1, KERN_DEBUG
"BTRFS: block rsv returned %d\n", ret);
"BTRFS: block rsv %d returned %d\n",
block_rsv->type, ret);
}
try_reserve:
ret = btrfs_reserve_metadata_bytes(root, block_rsv, blocksize,