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authorQu Wenruo <wqu@suse.com>2018-08-01 10:37:19 +0800
committerDavid Sterba <dsterba@suse.com>2018-08-06 13:13:03 +0200
commitcf90d884b347c50a1e8c1effc4093e497dd68b4b (patch)
treeb9a7d161c2a7da88764dd3239966f90edacd56a3 /fs/btrfs/volumes.h
parentbtrfs: Verify that every chunk has corresponding block group at mount time (diff)
downloadlinux-dev-cf90d884b347c50a1e8c1effc4093e497dd68b4b.tar.xz
linux-dev-cf90d884b347c50a1e8c1effc4093e497dd68b4b.zip
btrfs: Introduce mount time chunk <-> dev extent mapping check
This patch will introduce chunk <-> dev extent mapping check, to protect us against invalid dev extents or chunks. Since chunk mapping is the fundamental infrastructure of btrfs, extra check at mount time could prevent a lot of unexpected behavior (BUG_ON). Reported-by: Xu Wen <wen.xu@gatech.edu> Link: https://bugzilla.kernel.org/show_bug.cgi?id=200403 Link: https://bugzilla.kernel.org/show_bug.cgi?id=200407 Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/volumes.h')
-rw-r--r--fs/btrfs/volumes.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 049619176831..23e9285d88de 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -345,6 +345,7 @@ struct map_lookup {
u64 stripe_len;
int num_stripes;
int sub_stripes;
+ int verified_stripes; /* For mount time dev extent verification */
struct btrfs_bio_stripe stripes[];
};
@@ -556,5 +557,6 @@ bool btrfs_check_rw_degradable(struct btrfs_fs_info *fs_info,
struct btrfs_device *failing_dev);
int btrfs_bg_type_to_factor(u64 flags);
+int btrfs_verify_dev_extents(struct btrfs_fs_info *fs_info);
#endif