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raid1: use an int as the return value of raise_barrier() 

Using a sector_t as the return value is misleading, because
raise_barrier() only return 0 or -EINTR.

Also add comments for the return values of raise_barrier().

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
This commit is contained in:
Hou Tao 2019-07-02 22:35:48 +08:00 committed by Song Liu
parent 00ec4f3039
commit 4675719d0f
1 changed files with 4 additions and 1 deletions
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5
drivers/md/raid1.c
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@ -872,8 +872,11 @@ static void flush_pending_writes(struct r1conf *conf)
* backgroup IO calls must call raise_barrier. Once that returns
* there is no normal IO happeing. It must arrange to call
* lower_barrier when the particular background IO completes.
*
* If resync/recovery is interrupted, returns -EINTR;
* Otherwise, returns 0.
*/
static sector_t raise_barrier(struct r1conf *conf, sector_t sector_nr)
static int raise_barrier(struct r1conf *conf, sector_t sector_nr)
{
int idx = sector_to_idx(sector_nr);