commit 72949ef (iscsid: set PR_SET_IO_FLUSHER) set the iscsid's PR_SET_IO_FLUSHER flag to avoid deadlock. While we do not need to set this flag when scanning host. If this flag is set for scanning thread, we may lost devices reported by target because of memory allocation failure. Signed-off-by: Wenchao Hao <haowenchao@huawei.com> (cherry picked from commit a9eca8e6025929e3c96199214c69447247e226d8)
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