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| author |   Tejun Heo <tj@kernel.org> | 2013-02-27 17:04:16 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:16 -0800 |
| commit | 3b069c5d857a5f1b8cb6bb74c70d9446089f5077 (patch) | |
| tree | 58e005a8e9beba035a2551edd34afe1d802dba53 /drivers/infiniband/core/uverbs_cmd.c | |
| parent | i2c: convert to idr_alloc() (diff) | |
| download | linux-dev-3b069c5d857a5f1b8cb6bb74c70d9446089f5077.tar.xz linux-dev-3b069c5d857a5f1b8cb6bb74c70d9446089f5077.zip | |
IB/core: convert to idr_alloc()
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>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index e71d834c922a..a7d00f6b3bc1 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -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); - spin_unlock(&ib_uverbs_idr_lock); - if (ret == -EAGAIN) - goto retry; + ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT); + if (ret >= 0) + uobj->id = ret; - return ret; + spin_unlock(&ib_uverbs_idr_lock); + idr_preload_end(); + + return ret < 0 ? ret : 0; } void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |