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btrfs: fix folio refcount in __alloc_dummy_extent_buffer()

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Another improper use of __folio_put() in an error path after freshly
allocating pages/folios which returns them with the refcount initialized
to 1. The refactor from __free_pages() -> __folio_put() (instead of
folio_put) removed a refcount decrement found in __free_pages() and
folio_put but absent from __folio_put().

Fixes: 13df3775efca ("btrfs: cleanup metadata page pointer usage")
CC: stable@vger.kernel.org # 6.8+
Tested-by: Ed Tomlinson <edtoml@gmail.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Boris Burkov 2024-07-02 07:31:14 -07:00 committed by David Sterba
parent da0386c1c7
commit a56c85fa2d
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent_io.c
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@ -3553,7 +3553,7 @@ err:
for (int i = 0; i < num_folios; i++) {
if (eb->folios[i]) {
detach_extent_buffer_folio(eb, eb->folios[i]);
__folio_put(eb->folios[i]);
folio_put(eb->folios[i]);
}
}
__free_extent_buffer(eb);