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libceph: allocate the locator string with GFP_NOFAIL

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calc_target() isn't supposed to fail with anything but POOL_DNE, in
which case we report that the pool doesn't exist and fail the request
with -ENOENT.  Doing this for -ENOMEM is at the very least confusing
and also harmful -- as the preceding requests complete, a short-lived
locator string allocation is likely to succeed after a wait.

(We used to call ceph_object_locator_to_pg() for a pi lookup.  In
theory that could fail with -ENOENT, hence the "ret != -ENOENT" warning
being removed.)

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov
2018-05-23 14:46:53 +02:00
parent c843d13cae
commit a86f009f10
3 changed files with 13 additions and 24 deletions
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8
include/linux/ceph/osdmap.h
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@@ -279,10 +279,10 @@ bool ceph_osds_changed(const struct ceph_osds *old_acting,
const struct ceph_osds *new_acting,
bool any_change);
int __ceph_object_locator_to_pg(struct ceph_pg_pool_info *pi,
const struct ceph_object_id *oid,
const struct ceph_object_locator *oloc,
struct ceph_pg *raw_pgid);
void __ceph_object_locator_to_pg(struct ceph_pg_pool_info *pi,
const struct ceph_object_id *oid,
const struct ceph_object_locator *oloc,
struct ceph_pg *raw_pgid);
int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap,
const struct ceph_object_id *oid,
const struct ceph_object_locator *oloc,