bug report: hugetlbfs: use i_mmap_rwsem for more pmd sharing, synchronization

From: Colin Ian King
Date: Thu Dec 27 2018 - 06:45:28 EST

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Hi,

Static analysis with CoverityScan on linux-next detected a potential
null pointer dereference with the following commit:

Next message: Daniel Vetter: "Re: [PATCH] drm/drm_drv.c: Remove duplicate header"
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