diff options
| author | Eric Sandeen <sandeen@redhat.com> | 2013-01-31 00:54:55 +0000 |
|---|---|---|
| committer | Josef Bacik <jbacik@fusionio.com> | 2013-02-20 12:59:18 -0500 |
| commit | aa43a17c21cf35329b1a495dd6876798dd8b016b (patch) | |
| tree | d958b6d58305a2ea121613e8e89cd52ccfdbf513 | |
| parent | 5a01604783c23f28bd4212e839e79277193f974f (diff) | |
| download | linux-aa43a17c21cf35329b1a495dd6876798dd8b016b.tar.bz2 | |
btrfs: handle null fs_info in btrfs_panic()
At least backref_tree_panic() can apparently pass
in a null fs_info, so handle that in __btrfs_panic
to get the message out on the console.
The btrfs_panic macro also uses fs_info, but that's
largely pointless; it's testing to see if
BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is not set.
But if it *were* set, __btrfs_panic() would have,
well, paniced and we wouldn't be here, testing it!
So just BUG() at this point.
And since we only use fs_info once now, just use it
directly.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| -rw-r--r-- | fs/btrfs/ctree.h | 9 | ||||
| -rw-r--r-- | fs/btrfs/super.c | 2 |
2 files changed, 7 insertions, 4 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 78fba44ad3d9..1e3a994e1899 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3653,11 +3653,14 @@ __printf(5, 6) void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, unsigned int line, int errno, const char *fmt, ...); +/* + * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic + * will panic(). Otherwise we BUG() here. + */ #define btrfs_panic(fs_info, errno, fmt, args...) \ do { \ - struct btrfs_fs_info *_i = (fs_info); \ - __btrfs_panic(_i, __func__, __LINE__, errno, fmt, ##args); \ - BUG_ON(!(_i->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)); \ + __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ + BUG(); \ } while (0) /* acl.c */ diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index fd6a07c30ee9..06537d217419 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -289,7 +289,7 @@ void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, vaf.va = &args; errstr = btrfs_decode_error(errno, nbuf); - if (fs_info->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR) + if (fs_info && (fs_info->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)) panic(KERN_CRIT "BTRFS panic (device %s) in %s:%d: %pV (%s)\n", s_id, function, line, &vaf, errstr); |