btrfs: Remove extraneous extent_buffer_get from tree_mod_log_rewind

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When a rewound buffer is created it already has a ref count of 1 and the
dummy flag set. Then another ref is taken bumping the count to 2.
Finally when this buffer is released from btrfs_release_path the extra
reference is decremented by the special handling code in
free_extent_buffer.

However, this special code is in fact redundant sinca ref count of 1 is
still correct since the buffer is only accessed via btrfs_path struct.
This paves the way forward of removing the special handling in
free_extent_buffer.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Nikolay Borisov 2018-08-15 18:26:54 +03:00 • committed by David Sterba

parent 6c122e2a0c

commit 24cee18a1c

1 changed files with 0 additions and 1 deletions

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fs/btrfs/ctree.c

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