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btrfs: switch to refcount_t type for btrfs_trans_handle::use_count
authorDavid Sterba <dsterba@suse.com>
Wed, 8 Nov 2017 00:39:58 +0000 (01:39 +0100)
committerDavid Sterba <dsterba@suse.com>
Mon, 22 Jan 2018 15:08:14 +0000 (16:08 +0100)
commitb50fff816cbd670ea545ce98ae374356f08f2d75
tree583500f65c4a3b0db13963d7bec475c70dc8467c
parent2dbda74ed9e5497697b913c780c928e25e70d832
btrfs: switch to refcount_t type for btrfs_trans_handle::use_count

The use_count is a reference counter, we can use the refcount_t type,
though we don't use the atomicity. This is not a performance critical
code and we could catch the underflows. The type is changed from long,
but the number of references will fit an int.

Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/transaction.c
fs/btrfs/transaction.h