btrfs: log messages at unpin_extent_range() during unexpected cases

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At unpin_extent_range() we trigger a WARN_ON() when we don't find an
extent map or we find one with a start offset not matching the start
offset of the target range. This however isn't very useful for debugging
because:

1) We don't know which condition was triggered, as they are both in the
   same WARN_ON() call;

2) We don't know which inode was affected, from which root, for which
   range, what's the start offset of the extent map, and so on.

So trigger a separate warning for each case and log a message for each
case providing information about the inode, its root, the target range,
the generation and the start offset of the extent map we found.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

Filipe Manana 2023-12-04 16:20:29 +00:00 • committed by David Sterba

parent d224d2ef95

commit 00deaf04df

3 changed files with 18 additions and 8 deletions

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22

fs/btrfs/extent_map.c

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2

fs/btrfs/extent_map.h

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2

fs/btrfs/inode.c

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