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scst_mem: Check for errors in scst_sgv_pools_init()

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The register_shrinker() function may return an error since Linux
kernel v3.12.
This commit is contained in:
Gleb Chesnokov
2022-09-03 16:17:10 +03:00
parent a13ef3be90
commit 1807f82e39
1 changed files with 5 additions and 2 deletions
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7
scst/src/scst_mem.c
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@@ -1798,7 +1798,10 @@ int scst_sgv_pools_init(unsigned long mem_hwmark, unsigned long mem_lwmark)
sgv_shrinker.shrink = sgv_shrink;
#endif
sgv_shrinker.seeks = DEFAULT_SEEKS;
register_shrinker(&sgv_shrinker, "scst-sgv");
res = register_shrinker(&sgv_shrinker, "scst-sgv");
if (unlikely(res))
goto out_free_per_cpu_dma;
out:
TRACE_EXIT_RES(res);
@@ -1828,7 +1831,7 @@ out_free_pool:
kmem_cache_destroy(sgv_pool_cachep);
out_err:
res = -ENOMEM;
res = res ?: -ENOMEM;
goto out;
}