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vfs: fix compat_sys_stat() handling of overflows in st_nlink
authorAl Viro <viro@zeniv.linux.org.uk>
Mon, 13 Feb 2012 01:56:29 +0000 (20:56 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Tue, 14 Feb 2012 01:45:39 +0000 (20:45 -0500)
Massaged cp_compat_stat() into form closer to cp_new_stat(); the only
real issue had been in handling of st_nlink overflows - native 32bit
stat(2) returns -EOVERFLOW in such situations, compat one silently
loses upper bits.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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