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dm target: remove struct tt_internal

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The tt_internal is really just a list_head to manage registered target_type
in a double linked list,

Here embed the list_head into target_type directly,
1. to avoid kmalloc/kfree;
2. then tt_internal is really unneeded;

Cc: stable@kernel.org
Signed-off-by: Cheng Renquan <crquan@gmail.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Cheng Renquan 2009-04-02 19:55:28 +01:00 • committed by Alasdair G Kergon
parent 570b9d968b
commit 45194e4f89
3 changed files with 34 additions and 61 deletions
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3
include/linux/device-mapper.h
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@ -139,6 +139,9 @@ struct target_type {
dm_ioctl_fn ioctl;
dm_merge_fn merge;
dm_busy_fn busy;
/* For internal device-mapper use. */
struct list_head list;
};
struct io_restrictions {