  Recent observations of long-range multi-particle azimuthal correlations in
p--Pb and high multiplicity pp collisions provided new insights into collision
dynamics and opened a possibility to study collective effects in these small
systems. New measurement of $p_\mathrm{T}$-differential elliptic flow ($v_{2}$)
coefficient for inclusive charged hadrons as well as a variety of identified
particle species in p--Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV
recorded by ALICE during the LHC Run 2 data taking are presented. Besides high
precision measurements of $v_2(p_\mathrm{T})$ for $\mathrm{\pi^\pm, K^\pm}$ and
$\mathrm{p(\bar{p})}$, the very first results for $\mathrm{K_{S}^{0},
\Lambda(\bar{\Lambda})}$ and $\phi$ are shown. In order to eliminate non-flow
contamination, a pseudorapidity separation between correlated particles is
applied as well as subtraction of remaining non-flow estimate based on a
measurement of minimum-bias pp collisions at $\sqrt{s}=13$ TeV. Moreover,
reported characteristic mass ordering and approximate NCQ and $\mathrm{KE_T}$
scaling of $v_{2}$ allows to test various theoretical models, constrain the
initial conditions, and probe the origin of collective behavior in small
collision systems.
