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authorDan Williams <dan.j.williams@intel.com>2018-03-16 17:36:44 -0700
committerDan Williams <dan.j.williams@intel.com>2018-05-22 23:18:31 -0700
commita77d478642f12ade58fdfac335ae464df1944a1e (patch)
tree1d4597c7dc0e90d457d9fc49f57deef20b34d7bd /tools/testing
parentdax: Introduce a ->copy_to_iter dax operation (diff)
downloadlinux-dev-a77d478642f12ade58fdfac335ae464df1944a1e.tar.xz
linux-dev-a77d478642f12ade58fdfac335ae464df1944a1e.zip
dax: Report bytes remaining in dax_iomap_actor()
In preparation for protecting the dax read(2) path from media errors with copy_to_iter_mcsafe() (via dax_copy_to_iter()), convert the implementation to report the bytes successfully transferred. Cc: <x86@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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