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IB/core: convert to idr_alloc()

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Convert to the much saner new idr interface.

v2: Mike triggered WARN_ON() in idr_preload() because send_mad(),
    which may be used from non-process context, was calling
    idr_preload() unconditionally.  Preload iff @gfp_mask has
    __GFP_WAIT.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reported-by: "Marciniszyn, Mike" <mike.marciniszyn@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tejun Heo
2013-02-27 17:04:16 -08:00
committed by Linus Torvalds
parent 4ae42b0ff0
commit 3b069c5d85
6 changed files with 48 additions and 81 deletions
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17
drivers/infiniband/core/uverbs_cmd.c
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@@ -125,18 +125,17 @@ static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj)
{
int ret;
retry:
if (!idr_pre_get(idr, GFP_KERNEL))
return -ENOMEM;
idr_preload(GFP_KERNEL);
spin_lock(&ib_uverbs_idr_lock);
ret = idr_get_new(idr, uobj, &uobj->id);
ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT);
if (ret >= 0)
uobj->id = ret;
spin_unlock(&ib_uverbs_idr_lock);
idr_preload_end();
if (ret == -EAGAIN)
goto retry;
return ret;
return ret < 0 ? ret : 0;
}
void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj)