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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-13 17:35:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-13 17:35:48 -0800 |
| commit | 2870f6c4d136e093e22159b8916918ff42c92218 (patch) | |
| tree | f822a4fa9f72a901a40eda4a12dc0055ff8f6266 /fs/dax.c | |
| parent | 934f98d7e8123892bd9ca8ea08728ee0784e6597 (diff) | |
| parent | 152d7bd80dca5ce77ec2d7313149a2ab990e808e (diff) | |
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
- three fixes tagged for -stable including a crash fix, simple
performance tweak, and an invalid i/o error.
- build regression fix for the nvdimm unit tests
- nvdimm documentation update
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: fix __dax_pmd_fault crash
libnvdimm: documentation clarifications
libnvdimm, pmem: fix size trim in pmem_direct_access()
libnvdimm, e820: fix numa node for e820-type-12 pmem ranges
tools/testing/nvdimm, acpica: fix flag rename build breakage
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -629,6 +629,13 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, if ((length < PMD_SIZE) || (pfn & PG_PMD_COLOUR)) goto fallback; + /* + * TODO: teach vmf_insert_pfn_pmd() to support + * 'pte_special' for pmds + */ + if (pfn_valid(pfn)) + goto fallback; + if (buffer_unwritten(&bh) || buffer_new(&bh)) { int i; for (i = 0; i < PTRS_PER_PMD; i++) |