msync: fix incorrect fstart calculation
Fix a regression caused by 7fc34a62 ("mm/msync.c: sync only the requested range in msync()"). xfstests generic/075 fail occured on ext4 data=journal mode because the intended range was not syncing due to wrong fstart calculation. Signed-off-by:Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by:
Ashish Sangwan <a.sangwan@samsung.com> Reported-by:
Eric Whitney <enwlinux@gmail.com> Tested-by:
Eric Whitney <enwlinux@gmail.com> Acked-by:
Matthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by:
Lukas Czerner <lczerner@redhat.com> Tested-by:
Lukas Czerner <lczerner@redhat.com> Reviewed-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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