nommu: fix an incorrect comment in the do_mmap_shared_file()
Fix an incorrect comment in the do_mmap_shared_file(). If a mapping is requested MAP_SHARED, then a private copy cannot be made and still provide correct semantics. Signed-off-by: David Howells <dhowells@redhat.com> Reported-by: Dave Hudson <uclinux@blueteddy.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 3 additions and 4 deletions
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@ -1040,10 +1040,9 @@ static int do_mmap_shared_file(struct vm_area_struct *vma)
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if (ret != -ENOSYS)
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return ret;
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/* getting an ENOSYS error indicates that direct mmap isn't
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* possible (as opposed to tried but failed) so we'll fall
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* through to making a private copy of the data and mapping
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* that if we can */
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/* getting -ENOSYS indicates that direct mmap isn't possible (as
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* opposed to tried but failed) so we can only give a suitable error as
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* it's not possible to make a private copy if MAP_SHARED was given */
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return -ENODEV;
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}
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