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filesystem-dax for 4.19-rc6

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Fix a deadlock in the new for 4.19 dax_lock_mapping_entry() routine.
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Merge tag 'libnvdimm-fixes2-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Dan writes:
  "filesystem-dax for 4.19-rc6

   Fix a deadlock in the new for 4.19 dax_lock_mapping_entry() routine."

* tag 'libnvdimm-fixes2-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  dax: Fix deadlock in dax_lock_mapping_entry()
This commit is contained in:
Greg Kroah-Hartman 2018-09-30 06:19:38 -07:00
commit 9ba6873e16
1 changed files with 1 additions and 0 deletions
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1
fs/dax.c
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@ -447,6 +447,7 @@ bool dax_lock_mapping_entry(struct page *page)
xa_unlock_irq(&mapping->i_pages);
break;
} else if (IS_ERR(entry)) {
xa_unlock_irq(&mapping->i_pages);
WARN_ON_ONCE(PTR_ERR(entry) != -EAGAIN);
continue;
}