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[ Upstream commitdf24ac7a2e] Currently nfsd4_setup_inter_ssc returns the vfsmount of the source server's export when the mount completes. After the copy is done nfsd4_cleanup_inter_ssc is called with the vfsmount of the source server and it searches nfsd_ssc_mount_list for a matching entry to do the clean up. The problems with this approach are (1) the need to search the nfsd_ssc_mount_list and (2) the code has to handle the case where the matching entry is not found which looks ugly. The enhancement is instead of nfsd4_setup_inter_ssc returning the vfsmount, it returns the nfsd4_ssc_umount_item which has the vfsmount embedded in it. When nfsd4_cleanup_inter_ssc is called it's passed with the nfsd4_ssc_umount_item directly to do the clean up so no searching is needed and there is no need to handle the 'not found' case. Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> [ cel: adjusted whitespace and variable/function names ] Reviewed-by: Olga Kornievskaia <kolga@netapp.com> Stable-dep-of:34e8f9ec4c("NFSD: fix leaked reference count of nfsd4_ssc_umount_item") Signed-off-by: Sasha Levin <sashal@kernel.org>