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vfs: allow utimensat() calls to retry once on an ESTALE error

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Clearly, we can't handle the NULL filename case, but we can deal with
the case where there's a real pathname.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jeff Layton 2012-12-11 12:10:14 -05:00 committed by Al Viro
parent 96948fc606
commit a69201d6f0
1 changed files with 5 additions and 1 deletions
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6
fs/utimes.c
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@ -158,13 +158,17 @@ long do_utimes(int dfd, const char __user *filename, struct timespec *times,
if (!(flags & AT_SYMLINK_NOFOLLOW)) if (!(flags & AT_SYMLINK_NOFOLLOW))
lookup_flags |= LOOKUP_FOLLOW; lookup_flags |= LOOKUP_FOLLOW;
retry:
error = user_path_at(dfd, filename, lookup_flags, &path); error = user_path_at(dfd, filename, lookup_flags, &path);
if (error) if (error)
goto out; goto out;
error = utimes_common(&path, times); error = utimes_common(&path, times);
path_put(&path); path_put(&path);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
goto retry;
}
} }
out: out: