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btrfs: allow us to inject errors at io_ctl_init 

This was instrumental in reproducing a space cache bug.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Josef Bacik 2017-12-11 11:36:50 -05:00 committed by Alexei Starovoitov
parent 965de87e54
commit 023f46c5b8
1 changed files with 2 additions and 0 deletions
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2
fs/btrfs/free-space-cache.c
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@ -22,6 +22,7 @@
#include <linux/slab.h>
#include <linux/math64.h>
#include <linux/ratelimit.h>
#include <linux/bpf.h>
#include "ctree.h"
#include "free-space-cache.h"
#include "transaction.h"
@ -332,6 +333,7 @@ static int io_ctl_init(struct btrfs_io_ctl *io_ctl, struct inode *inode,
return 0;
}
BPF_ALLOW_ERROR_INJECTION(io_ctl_init);
static void io_ctl_free(struct btrfs_io_ctl *io_ctl)
{